Add AirAssault and Airlift mission types with CTLD support

- Add the new airassault mission type and special flightplans for it
- Add the mission type to airbase and FOB
- Add Layout for the UH-1H
- Add mission type to capable squadrons
- Allow the auto planner to task air assault missions when preconditions are met
- Improve Airlift mission type and improve the flightplan (Stopover and Helo landing)
- Allow Slingload and spawnable crates for airlift
- Rework airsupport to a general missiondata class
- Added Carrier Information to mission data
- Allow to define CTLD specific capabilities in the unit yaml
- Allow inflight preload and fixed wing support for air assault

game/ato/flight.py

@@ -139,6 +139,10 @@ class Flight(SidcDescribable):
     def unit_type(self) -> AircraftType:
         return self.squadron.aircraft
 
+    @property
+    def is_helo(self) -> bool:
+        return self.unit_type.dcs_unit_type.helicopter
+
     @property
     def from_cp(self) -> ControlPoint:
         return self.departure