Change squadrons to operate out of a single base.

https://github.com/dcs-liberation/dcs_liberation/issues/1145

Currently this is fixed at the start of the campaign. The squadron
locations are defined by the campaign file.

Follow up work:

* Track aircraft ownership per-squadron rather than per-airbase.
* UI for relocating squadrons.
* Ferry missions for squadrons that are relocating.
* Auto-relocation (probably only for retreat handling).

Fixes https://github.com/dcs-liberation/dcs_liberation/issues/1138

game/game.py

@@ -1,10 +1,12 @@
+from __future__ import annotations
+
 import itertools
 import logging
 import math
 from collections import Iterator
 from datetime import date, datetime, timedelta
 from enum import Enum
-from typing import Any, List, Type, Union, cast
+from typing import Any, List, Type, Union, cast, TYPE_CHECKING
 
 from dcs.mapping import Point
 from dcs.task import CAP, CAS, PinpointStrike
@@ -21,6 +23,7 @@ from gen.flights.closestairfields import ObjectiveDistanceCache
 from gen.flights.flight import FlightType
 from gen.ground_forces.ai_ground_planner import GroundPlanner
 from . import persistency
+from .campaignloader import CampaignAirWingConfig
 from .coalition import Coalition
 from .debriefing import Debriefing
 from .event.event import Event
@@ -28,10 +31,8 @@ from .event.frontlineattack import FrontlineAttackEvent
 from .factions.faction import Faction
 from .infos.information import Information
 from .navmesh import NavMesh
-from .procurement import AircraftProcurementRequest
 from .profiling import logged_duration
 from .settings import Settings
-from .squadrons import AirWing
 from .theater import ConflictTheater, ControlPoint
 from .theater.bullseye import Bullseye
 from .theater.transitnetwork import TransitNetwork, TransitNetworkBuilder
@@ -39,6 +40,9 @@ from .threatzones import ThreatZones
 from .unitmap import UnitMap
 from .weather import Conditions, TimeOfDay
 
+if TYPE_CHECKING:
+    from .squadrons import AirWing
+
 COMMISION_UNIT_VARIETY = 4
 COMMISION_LIMITS_SCALE = 1.5
 COMMISION_LIMITS_FACTORS = {
@@ -85,6 +89,7 @@ class Game:
         player_faction: Faction,
         enemy_faction: Faction,
         theater: ConflictTheater,
+        air_wing_config: CampaignAirWingConfig,
         start_date: datetime,
         settings: Settings,
         player_budget: float,
@@ -119,6 +124,9 @@ class Game:
         self.blue.set_opponent(self.red)
         self.red.set_opponent(self.blue)
 
+        self.blue.configure_default_air_wing(air_wing_config)
+        self.red.configure_default_air_wing(air_wing_config)
+
         self.aircraft_inventory = GlobalAircraftInventory(self.theater.controlpoints)
 
         self.on_load(game_still_initializing=True)