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.

game/campaignloader/defaultsquadronassigner.py

@@ -44,6 +44,7 @@ class DefaultSquadronAssigner:
                 squadron = Squadron.create_from(
                     squadron_def,
                     squadron_config.primary,
+                    squadron_config.max_size,
                     control_point,
                     self.coalition,
                     self.game,