Shutdown hang (#11793)

* intentionally handle queues during shutdown and carefully manage shutdown order

* more carefully manage shutdown to avoid threadlocks

* use debug for signal logging

* ensure disabled cameras dont break shutdown

* typo

frigate/record/record.py

@@ -22,6 +22,7 @@ def manage_recordings(config: FrigateConfig) -> None:
     stop_event = mp.Event()
 
     def receiveSignal(signalNumber: int, frame: Optional[FrameType]) -> None:
+        logger.debug(f"Recording manager process received signal {signalNumber}")
         stop_event.set()
 
     signal.signal(signal.SIGTERM, receiveSignal)