Generate packages according to TOT order (latest first, earliest last)

This makes sure that aircraft spawning in the air due to a shortage of parking spots, will have the earliest TOT possible. Flights with later TOTs should be generated first so that they remain at the airfield as OCA target.

game/missiongenerator/aircraft/aircraftgenerator.py

@@ -104,7 +104,7 @@ class AircraftGenerator:
             ato: The ATO to spawn aircraft for.
             dynamic_runways: Runway data for carriers and FARPs.
         """
-        for package in ato.packages:
+        for package in reversed(sorted(ato.packages, key=lambda x: x.time_over_target)):
             if not package.flights:
                 continue
             for flight in package.flights: