Add (very!) rough simulation of frozen combat.

There are some TODOs here but th behavior is flagged off by default. The
biggest TODO here is that the time spent frozen is not simulated, so
flights that are engaged by SAMs will unfreeze, move slightly, then re-
freeze.

https://github.com/dcs-liberation/dcs_liberation/issues/1680

game/settings/settings.py

@@ -323,6 +323,18 @@ class Settings:
             "mission reaches the set state or at first contact, whichever comes first."
         ),
     )
+    auto_resolve_combat: bool = boolean_option(
+        "Auto-resolve combat during fast-forward (WIP)",
+        page=MISSION_GENERATOR_PAGE,
+        section=GAMEPLAY_SECTION,
+        default=False,
+        detail=(
+            "If enabled, aircraft entering combat during fast forward will have their "
+            "combat auto-resolved after a period of time. This allows the simulation "
+            "to advance further into the mission before requiring mission generation, "
+            "but simulation is currently very rudimentary so may result in huge losses."
+        ),
+    )
     supercarrier: bool = boolean_option(
         "Use supercarrier module",
         MISSION_GENERATOR_PAGE,