Assorted tweaks for cross-mod compatibility and preference.

0.0.1
Added compatibility between Rampant Arsenal's vehicles and VortiK's Armor Plating
Added option to restore Aircraft's cargo plane's gun when AAI is installed.
Added option to have variants for all Aircraft weapons when AAI is installed.
Added options to create player-specific vehicle variants for Aircraft and Rampant Arsenal which have all weapons but cannot be controlled by AAI.