Mypy config flow (#2612)

* Strong type config flow and coordinator

* Typing of entity rename listener

* Library update time, spread the minutes

* Revert "Library update time, spread the minutes"

This reverts commit f5530bb.

* Fix mypy issues

* WIP

* WIP

* WIP

* Add attributes

* WIP

* WIP

* WIP

* Remove debug

* MyPy

* Lint

Author: andrew-codechimp