Add "Instant Squadron Transfer" cheat option

Resolves #14

game/ato/flight.py

@@ -264,4 +264,8 @@ class Flight(SidcDescribable):
                 results.kill_pilot(self, pilot)
 
     def recreate_flight_plan(self) -> None:
+        from game.sim.gameupdateevents import GameUpdateEvents
+        from game.server import EventStream
+
         self._flight_plan_builder.regenerate()
+        EventStream.put_nowait(GameUpdateEvents().update_flight(self))

game/migrator.py

@@ -4,7 +4,6 @@ from typing import TYPE_CHECKING
 
 from game.ato.packagewaypoints import PackageWaypoints
 from game.data.doctrine import MODERN_DOCTRINE, COLDWAR_DOCTRINE, WWII_DOCTRINE
-from game.utils import knots, feet, nautical_miles
 
 if TYPE_CHECKING:
     from game import Game

game/settings/settings.py

@@ -509,6 +509,7 @@ class Settings:
     show_red_ato: bool = False
     enable_frontline_cheats: bool = False
     enable_base_capture_cheat: bool = False
+    enable_transfer_cheat: bool = False
 
     # LUA Plugins system
     plugins: Dict[str, bool] = field(default_factory=dict)