prevent keybinds from overflowing left side of GUI

[WaitingIdly]

always indent the keybind name slightly in from the page border. uses 5 because 20, as in the obsolete mod, seemed unneeded and too much indentation on small screens set to large GUI.
option is true by default
marks keydescfix as obsolete
as discussed in #57

[what-the-diff]

PR Summary

• Introduction of new configuration option
  A new option called utPreventKeybindingEntryOverflow is added to UTConfigTweaks.MiscCategory. This setting allows users to control keybinding entry overflow settings.

• Inclusion of mixin configuration in UTLoadingPlugin
  A new mixin configuration file, "mixins.tweaks.misc.gui.keybindlistentry.json" has been added to the UTLoadingPlugin. This update will enhance the plugin's functionality.

• Creation of a new class for keybinding list entry rendering
  A new class UTKeyEntryMixin has been introduced. This is specifically designed to handle the task of displaying keybinding list entries, promising more efficiency in the process.

• Compatibility check added for keydescfix
  In the UTObsoleteModsHandler, a compatibility check for the module keydescfix has now been added. This check uses the freshly added config option utPreventKeybindingEntryOverflow, thus ensuring better interaction between different modules.

• Addition of a new mixin configuration file
  A new mixin configuration file mixins.tweaks.misc.gui.keybindlistentry.json has been added. This further broadens the functionality and configurability of our systems.