Use the actual Country type instead of the name.

We want other pieces of country information (in particular the short
names). This cleans up a lot of code anyway.

As an added bonus, this now catches squadrons that used invalid names
which would previously be passed through to pydcs and... then I don't
know what would happen.

game/missiongenerator/logisticsgenerator.py

@@ -93,9 +93,8 @@ class LogisticsGenerator:
             "ctld", "logisticunit"
         ):
             # Spawn logisticsunit at pickup zones
-            country = self.mission.country(self.flight.country)
             logistic_unit = self.mission.static_group(
-                country,
+                self.flight.squadron.coalition.faction.country,
                 f"{self.group.name}logistic",
                 Fortification.FARP_Ammo_Dump_Coating,
                 pickup_point,