Hahomematic

- Add a new custom entity type for windows drive
- Return True if sending service calls succeed

- Add ExtendedConfig and use for additional_entities
- Add ExtendedConfig to custom entities
- Add LED_STATUS to HM-OU-LED16
- Allow multiple CustomConfigs for a hm device
- Cleanup test imports
- Increase the line length to 99
- Remove LOWBAT from HM-LC-Sw1-DR
- Remove obsolete ED_ADDITIONAL_ENTITIES_BY_DEVICE_TYPE from entity_definition
- Replace custom entity config data structure by CustomConfig
- Sort lists in parameter_visibility.py

- Add helper, central tests
- Add more tests and test based refactorings
- Reduce backend calls and logging during lost connection
- Remove obsolete parse_ccu_sys_var
- Update color_conversion threshold by guillempages

- Unify event parameters
- Refactor entity.py for better event support
- Fix wrong warning after set_system_variable
- Add validation to event_data

- Remove OPERATING_VOLTAGE from HmIP-BROLL, HmIP-FROLL
- Remove loop from test signature
- Cleanup ignore/unignore handling and add tests

- No longer create ClientSession in json_rpc_client for tests
- Add backend tests
- Use mocked local client to check method_calls
- Remove sleep after connection_checker stops
- Remove LOWBAT from HM-LC-Sw1-Pl, HM-LC-Sw2-FM
- Simplify entity de-/registration
- Refactor add/delete device and add tests
- Add un_ignore_list to test config
- Allow unignore for DEVICE_ERROR_EVENTS