Minor ai bugfix and improvements
• add "aggressive only to players" setting for ai, or "aggressive only to (insert aircraft)" or a setting to essentially make the ai aircraft allied with the player that will do whatever action the player asked the ai to (ie telling the ai to attack another ai aircraft, do formation flights, etc)
• fix wright isles final approach for ai (since it's completely broken lmao)
• fix ai aircraft broken propeller parts not despawning properly but instead turns pink when the ai aircraft despawns
• make it so that you could chose which ai aircraft to despawn (and not just every single ai aircraft at once)
• add a setting to enable and disable ai aircraft despawning after it's been critically damaged/destroyed