WIP AGA Support

[Vairn]

Working on Adding AGA support, and AGA Features to ACE.
https://github.com/AdamENESS/ACE/tree/AGA

• AGA viewport creation
• AGA Palette Support
• KillEHB when 6 bitplanes and AGA enabled
• Loading palette from File
• Fix Fade to work with AGA Palette
• Blitting bitmaps
• Loading AGA Palettes
• Image Converter
• Palette Conveter
• Sprites
• Ability to set the Odd/Even palette Bank for Sprites
• Fetch Mode
• Test Tilebuffer
• Test Scrollbuffer
• Add Ability to use the subpixel scrolling added by AGA.
• Test Blobs
• Test Copper
• Look Asset Converters/Tools, and make them deal with AGA Assets.

[Vairn]

Even though there is no "Utils/Fade", I have added support for AGA Palette fades to the fading included with Germz.

[tehKaiN]

there are fade fns in utils/palette.h though. Perhaps it's the right place for them? Still, contrary to fade fns from ACE, the fade util from germz is instanced and is meant for more elaborate usage, like dimming audio etc. So perhaps it should be in separate file. We could add it as utils/fade, I think.

[Vairn]

I meant I tested it with the fade you Made for GermZ.

The PaletteDIM in palette.c/h is where I added some AGA support code.
Which is then used by the fade from Germz.

[Vairn]

As per convo in Discord.

The palette format will be changed to this.
Header

UWORD colourCount
UBYTE flags

Followed by n UWORDS if OCS/ECS
or n ULONGS if AGA.
Where n is the number of Colours.

Atm, the flags just say whether it is in 24bit AGA colour or 12bit OCS/ECS