Rework sim status update to not need a thread.

Rather than polling at 60Hz (which may be faster than the tick rate,
wasting cycles; and also makes synchronization annoying), collect events
during the tick and emit them after (rate limited, pooling events until
it is time for another event to send).

This can be improved by paying attention to the aircraft update list,
which would allow us to avoid updating aircraft that don't have a status
change. To do that we need to be able to quickly lookup a FlightJs
matching a Flight through, and Flight isn't hashable.

We should also be removing dead events and de-duplicating. Currently
each flight has an update for every tick, but only the latest one
matters. Combat update events also don't matter if the same combat is
new in the update.

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

qt_ui/models.py

@@ -17,6 +17,7 @@ from game.ato.flight import Flight
 from game.ato.flighttype import FlightType
 from game.ato.package import Package
 from game.game import Game
+from game.sim.gameupdateevents import GameUpdateEvents
 from game.squadrons.squadron import Pilot, Squadron
 from game.theater.missiontarget import MissionTarget
 from game.transfers import PendingTransfers, TransferOrder
@@ -211,7 +212,7 @@ class PackageModel(QAbstractListModel):
         for flight in self.package.flights:
             yield flight
 
-    def on_sim_update(self) -> None:
+    def on_sim_update(self, _events: GameUpdateEvents) -> None:
         self.dataChanged.emit(self.index(0), self.index(self.rowCount()))
 
 
@@ -311,7 +312,7 @@ class AtoModel(QAbstractListModel):
         for package in self.ato.packages:
             yield self.package_models.acquire(package)
 
-    def on_sim_update(self) -> None:
+    def on_sim_update(self, _events: GameUpdateEvents) -> None:
         self.dataChanged.emit(self.index(0), self.index(self.rowCount()))