Reorganise the readme (#1246)

Split the readme up a little to make it easier to follow.
Closes #1087

doc/camerasinkwindow.md

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+# Camera/Sink Window
+_Shortcut: Ctrl + K_
+
+![Camera/Sink Window](camera-sink.png)
+
+## Options
+
+Input|Action
+---|------
+Filters | Open the [filters](filters.md) editor. The checkbox toggles whether configured filters are applied.
+Track Room          | Whether to show the camera/sinks that are in the currently selected room
+Sync | Whether the camera/sink selected in the window will be synced with the camera/sink selected in the view (bidirectional)
+
+## Camera/Sink List
+
+Column | Meaning
+---|---
+\# | The camera/sink number
+Room | The number of the room that the camera/sink is in
+Type | The type name of the camera/sink
+Hide | Whether to hide this camera/sink in the viewer
+
+## Camera/Sink Details
+
+The type of the camera/sink can be swapped between camera and sink to see the different interpretation of the values.
+
+Stat | Camera/Sink Type
+--- | ---
+Type | Both
+\# | Both
+Position | Both
+Room | Camera
+Persistent | Camera
+Strength | Sink
+Box Index | Sink
+Inferred Room | Sink
+
+## Triggered By
+The `Triggered By` list shows the triggers that can trigger the camera/sink. Clicking a trigger in the list will select that trigger.
+
+Column | Meaning
+---|---
+\# | The trigger number
+Room | The number of the room that the trigger is in
+Type | The type name of the trigger

doc/consolewindow.md

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+# Console
+
+The console window will log diagnostic messages in the future and can be used to run Lua.
+
+![Console](console.png)
+
+The input box allows you to enter Lua scripts.

doc/controls.md

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+# Controls
+
+## General
+
+Key|Action
+---|------
+CTRL + O    | Open file
+CTRL + F    | Show find window
+CTRL + R    | Open Route window
+CTRL + T    | New Triggers window
+CTRL + I    | New Items window
+CTRL + M    | New Rooms window
+CTRL + L    | New Lights window
+CTRL + K    | New Camera/Sink window
+CTRL + P    | New Plugins window
+CTRL + S    | New Statics Window 
+CTRL + H    | Toggle room lighting
+F1          | Toggle settings window
+F5          | Reload current level
+F6          | Load previous level in directory
+F7          | Load next level in directory
+F           | Free camera
+G           | Toggle geometry mode
+H           | Toggle room highlighting
+L           | Toggle lights visibility
+K           | Toggle camera/sink visibility
+O           | Orbit camera
+P           | Toggle flipmap
+T           | Toggle trigger visibility
+X           | Axis camera
+INSERT      | Reset camera
+Left mouse  | Click on a room to go to that room
+:arrow_left: | Go to previous waypoint in route
+:arrow_right: | Go to next waypoint in route
+Delete      | Delete the currently selected waypoint
+Right mouse | Show the context menu
+
+## Free View
+
+Key|Action
+---|------
+W                       | Move forward
+A                       | Move left
+S                       | Move backwards
+D                       | Move right
+E                       | Move up
+Q                       | Move down
+Right mouse + move      | Change look direction
+Mouse wheel             | Zoom in/out
+
+## Axis View
+
+Key|Action
+---|------
+W                       | Move forward along Z axis
+S                       | Move backwards along Z axis
+A                       | Move backwards along X axis
+D                       | Move forward along X axis
+E                       | Move up
+Q                       | Move down
+Right mouse + move      | Change look direction
+
+## Orbit View
+
+Key|Action
+---|------
+Left mouse + move         | Pan camera
+Right mouse + move        | Rotate around target
+Left + Right mouse + move | Vertical panning
+Mouse wheel               | Zoom in/out

doc/filters.md

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+# Filters
+
+Filters can be used and combined to build a query to find items based on their properties. The following windows currently support filters:
+- `Items`
+- `Triggers`
+- `Lights`
+- `Rooms`
+- `Camera/Sink`
+
+## Using Filters
+
+![Screenshot](filters_1.png)
+
+![Screenshot](filters_2.png)
+
+Filters are enabled by default in each window. The usage of the current filter can be toggled with the checkbox next to the `Filters` button on each window. The filters editor can be opened by clicking the `Filters` button. New filters can be added with the `+` button and deleted with the `X` button.
+
+When multiple filters are defined they can be combined with different operators.
+
+The contents of the list will be filtered and show the items that satisfy all of the conditions.
+
+## Compare Operations
+
+Different comparison operators are available depending on the data type of the selected property and whether it is a single or multi-value property.
+
+| Name | String | Number | Boolean | Number of Values |
+| ---- | ------ | ------ | ------- | ---- |
+| Is   | ✓ | ✓ | ✓ | 1 |
+| Is not   | ✓ | ✓ | ✓ | 1 |
+| Greater than   | ✗ | ✓ | ✗ | 1 |
+| Greater than or equal   | ✗ | ✓ | ✗ | 1 |
+| Less than   | ✗ | ✓ | ✗ | 1 |
+| Less than or equal  | ✗ | ✓ | ✗ | 1 |
+| Between   | ✗ | ✓ | ✗ | 2 |
+| Between inclusive   | ✗ | ✓ | ✗ | 2 |
+| Is Present*  | ✓ | ✓ | ✓ | 0 |
+| Is not Present | ✓ | ✓ | ✓ | 0 |
+
+If the value is a multi value property such as `Triggered By` on an `Item` then two additional operations: `is present` and `is not present` are available. This will return whether there are any values for that property on the item being tested.
+
+## Combining Filters
+
+Filters can be combined with either `And` or `Or`. Filters are combined in the order they are defined.

doc/itemswindow.md

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+# Items Window
+_Shortcut: Ctrl+I_
+
+Shows the list of items that exist in the current level and allows you to filter, sort, inspect and add items to a route.
+
+![Items Window](items.png)
+
+## Options
+
+Input|Action
+---|------
+Filters | Open the [filters](filters.md) editor. The checkbox toggles whether configured filters are applied.
+Track           | Whether to show the items that are in the currently selected room. Clicking the button will show the expanded track menu where you can choose whether rooms are tracked.
+Sync | Whether the item selected in the window will be synced with the item selected in the view (bidirectional)
+
+## Items List
+
+Column | Meaning
+---|---
+\# | The item number
+Room | The number of the room that the item is in
+ID | The type ID of the item
+Type | The type name of the item
+Hide | Whether to hide this item in the viewer
+
+## Item Details
+
+Stat | Meaning
+--- | ---
+Type | The type name of the item
+\# | The item number
+Position | The position of the item in world space
+Angle | The raw rotation value
+Angle Degrees | The rotation value converted to degrees
+Type ID | The type ID of the item
+Room | The number of the room that the item is in
+Clear Body | Whether to remove a dead body when a bodybag trigger is triggered
+Invisible | Whether this item is invisible
+Flags | Entity activation flags
+OCB | Used to change entity behaviour
+Category | Categories to which the item is assigned
+
+## Add To Route
+Clicking the `Add to Route` button will insert this item at the current position in the route.
+
+## Triggered By
+The `Triggered By` list shows the triggers that can trigger the item. Clicking a trigger in the list will select that trigger.
+
+Column | Meaning
+---|---
+\# | The trigger number
+Room | The number of the room that the trigger is in
+Type | The type name of the trigger

doc/lightswindow.md

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+# Lights Window
+_Shortcut: Ctrl + L_
+
+![Lights Window](lights.png)
+
+## Options
+
+Input|Action
+---|------
+Filters | Open the [filters](filters.md) editor. The checkbox toggles whether configured filters are applied.
+Track Room          | Whether to show the lights that are in the currently selected room. Clicking the button will show the expanded track menu where you can choose whether rooms are tracked.
+Sync | Whether the light selected in the window will be synced with the light selected in the view (bidirectional)
+
+## Lights List
+
+Column | Meaning
+---|---
+\# | The light number
+Room | The number of the room that the light is in
+Type | The type name of the light
+Hide | Whether to hide this light in the viewer
+
+## Light Details
+
+Stat | Light Type | Game Version
+--- | --- | ---
+Type | All | All
+\# | All | All 
+Room | All | All
+Position | Point, Spot, Shadow, Fog Bulb | All 
+Intensity |Point, Spot| TR1-3
+Fade |Point, Spot|TR1-3
+Colour | Point, Spot, Sun, Shadow  | TR3+
+Direction |Sun, Spot|TR3+
+Intensity |Point, Spot, Shadow, Fog Bulb|TR1-4
+Hotspot|Point, Spot, Shadow|TR4+
+Falloff|Point, Shadow|TR4+
+Falloff Angle|Spot|TR4+
+Length|Spot|TR4
+Cutoff|Spot|TR4
+Rad In|Spot|TR5
+Rad Out|Spot|TR5
+Range|Spot|TR5
+Density|Fog Bulb|TR4+
+Radius|Fog Bulb|TR4+
+
+### Light Types
+
+Not all light types are in all games. The table below shows when the different types are introduced.
+
+Type | Games
+---|---
+Point|All
+Spot|TR3+
+Sun|TR3+
+Shadow|TR4+
+Fog Bulb|TR4+

doc/menus.md

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+# Menus
+
+## File
+
+![File Menu](menu_file.png)
+
+Action|Meaning
+---|---
+Open|Open a level file
+Open Recent|Open a recently opened file. The number of recent files can be changed in the [settings] window.
+Switch Level|Open another level in the same folder as the currently opened level file.
+Reload|Reload the current level from file
+Exit|Close trview
+
+## View
+
+![View Menu](menu_view.png)
+
+Action|Meaning
+---|---
+UI|Toggle on or off visibility of all UI elements. This will override the other visibility options below if set to off.
+Minimap|Toggle visibility of the minimap.
+Tooltip|Toggle visibility of the tooltip when hovering over elements in the viewer.
+Compass|Toggle visibility of the compass.
+Selection|Toggle visibility of the selection highlights.
+Route|Toggle visibility of the route waypoints and paths.
+Tools|Toggle visibility of the tools, such as the measure tool.
+Unhide All|Unhides anything that has been hidden via the context menu or their windows.
+
+## Windows
+
+![Windows Menu](menu_windows.png)
+
+Action|Meaning
+---|---
+Items|Create a new [items window](itemswindow.md)
+Triggers|Create a new [triggers window](triggerswindow.md)
+Rooms|Create a new [rooms window](roomswindow.md)
+Route|Create or open the [route window](routewindow.md)
+Lights|Create a new [lights window](lightswindow.md)
+Camera/Sink|Create a new [camera/sink window](camerasinkwindow.md)
+Log|Create a new [log window](logwindow.md)
+Textures|Create a new [textures window](textureswindow.md)
+Console|Create a new [console window](consolewindow.md)
+Plugins|Create a new [plugins window](pluginswindow.md)
+Statics|Create a new [statics window](staticswindow.md)
+Reset Layout|Clear any UI customisations that have been applied
+Reset Fonts|Reset the font face and size to default
+
+## Help
+
+![Help Menu](menu_help.png)
+
+Action|Meaning
+---|---
+Github|Go to the trview GitHub page
+Discord|Permanent invite to the trview Discord
+About|Show the about box

doc/pluginswindow.md

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+# Plugins
+
+The plugins window shows the plugins that have been loaded from the configured plugins directories. The plugins directories can be managed from the [settings window](settings.md).
+
+![Plugins](plugins.png)
+
+Action|Usage
+---|---
+Open|Opens the directory for the plugin in explorer.
+Reload|Attempts to reload the plugin from file. 
+
+