ICBM Mod API

Added: Drivables shown on Radar (When "OnRadar True" is added to config)
Added: Drivables engaged by AA Guns (When "OnRadar True" is added to
config)

Todo: Planes are not damaged, a proper damage source is needed
(disgusted with
Flan)
Player need to register/unregister to the radar when entering the
drivable/leaving with RadarRegistry.register(entity player); and
RadarRegistry.unregister(entity player);
Hopefully Flan can do this because he knows where the functions are and
it would take hour for me to find them

Note: The api folders have to be moved to the mods root folder, along
the co folder. Github refuses to dupload the folders there