Logi Circle public API refactor and config flow (#20624)

* Logi Circle now uses OAuth2 for authentication, added config flow.

* Service calls now dispatched to camera entities via signalled events

* Update from PR review

* Add unit tests for config flow

* Updated CODEOWNERS

* Reverted change to .coveragerc

* Improved test coverage of config flow

homeassistant/config_entries.py

@@ -161,6 +161,7 @@ FLOWS = [
     'ipma',
     'lifx',
     'locative',
+    'logi_circle',
     'luftdaten',
     'mailgun',
     'mobile_app',