Split config.py into multiple files (#14038)

* Replace logging.warn with logging.warning

* Install config global state early

* Split config.py into more manageable pieces

frigate/app.py

@@ -569,7 +569,6 @@ class FrigateApp:
 
         # Ensure global state.
         self.ensure_dirs()
-        self.config.install()
 
         # Start frigate services.
         self.init_camera_metrics()