* log time delay of domain setup in info level
* when setup problems appear, it's difficult to debug which are the components that took a lot to set up. This minimal change goes further than the 'slow setup warning' and measures the setup time interval for each domain.
* use timer as in helpers/entity
* Automation: initial state > restore state
* Clean up code
* Ensure MQTT defaults are used.
* Ensure failed platforms always return None
* Automation: write state to state machine after start
Eugenio Panadero
Paulus Schoutsen
Fabian Affolter