Typing Part 3: events.py (#3352)

* Typing: events.py

* Remove unused variable

* Fix return Any from return statement

Not all elements from the event dict are sure to be something that can be evaluated

See e.g.: https://github.com/python/mypy/issues/5697

* Sort out Event disambiguity

There was a name collision of multiprocessing Event type and frigate events

Co-authored-by: Sebastian Englbrecht <sebastian.englbrecht@kabelmail.de>

frigate/mypy.ini

@@ -34,6 +34,9 @@ disallow_untyped_calls = false
 [mypy-frigate.const]
 ignore_errors = false
 
+[mypy-frigate.events]
+ignore_errors = false
+
 [mypy-frigate.log]
 ignore_errors = false