Add option to limit squadron sizes and begin full.

Adding temporarily as an option to make sure it's not a terrible idea,
but the old mode will probably go away.

Fixes https://github.com/dcs-liberation/dcs_liberation/issues/1583.
Fixes https://github.com/dcs-liberation/dcs_liberation/issues/2808.

qt_ui/main.py

@@ -238,6 +238,15 @@ def parse_args() -> argparse.Namespace:
         "--auto-procurement", action="store_true", help="Automate bluefor procurement."
     )
 
+    new_game.add_argument(
+        "--use-new-squadron-rules",
+        action="store_true",
+        help=(
+            "Limit the number of aircraft per squadron and begin the campaign with "
+            "them at full strength."
+        ),
+    )
+
     new_game.add_argument(
         "--inverted", action="store_true", help="Invert the campaign."
     )
@@ -280,6 +289,7 @@ def create_game(
     start_date: datetime,
     restrict_weapons_by_date: bool,
     advanced_iads: bool,
+    use_new_squadron_rules: bool,
 ) -> Game:
     first_start = liberation_install.init()
     if first_start:
@@ -312,6 +322,7 @@ def create_game(
             enable_base_capture_cheat=cheats,
             enable_transfer_cheat=cheats,
             restrict_weapons_by_date=restrict_weapons_by_date,
+            enable_squadron_aircraft_limits=use_new_squadron_rules,
         ),
         GeneratorSettings(
             start_date=start_date,
@@ -346,7 +357,7 @@ def create_game(
         ),
     )
     game = generator.generate()
-    game.begin_turn_0()
+    game.begin_turn_0(squadrons_start_full=use_new_squadron_rules)
     return game
 
 
@@ -438,6 +449,7 @@ def main():
                 args.date,
                 args.restrict_weapons_by_date,
                 args.advanced_iads,
+                args.use_new_squadron_rules,
             )
     if args.subcommand == "lint-weapons":
         lint_weapon_data_for_aircraft(AircraftType.named(args.aircraft))