* Add notify entity component
* Device classes, restore state, icons
* Add icons file
* Add tests for kitchen_sink
* Remove notify from no_entity_platforms in hassfest icons, translation link
* ruff
* Remove `data` feature
* Only message support
* Complete initial device classes
* mypy pylint
* Remove device_class implementation
* format
* Follow up comments
* Remove _attr_supported_features
* Use setup_test_component_platform
* User helper at other places
* last comment
* Add entry unload test and non async test
* Avoid default mutable object in constructor
* Support notification_id in notify.persistent_notification
* Apply suggestions from code review
Co-authored-by: Scott Giminiani <ScottG489@Gmail.com>
---------
Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>
Co-authored-by: Scott Giminiani <ScottG489@Gmail.com>
