* Add BaseEntity for apsystems integration
* Exclude entity.py from apsystems from coverage
* Remove api from BaseEntity from apsystems as it is not yet used
* Split BaseEntity and BaseCoordinatorEntity in apsystems integration
* Clean up of asserting unique_id everywhere in apsystems integration
* Remove BaseCoordinatorEntity from apsystems
* Remove double type declaration originating from merge in apsystems
Marlon