Add config flow to linky (#26076)
* Linky: setup ConfigFlow
* async_track_time_interval
* Review from @MartinHjelmare 1
* Review from @MartinHjelmare 2
* Review from @MartinHjelmare 3
* Review from @MartinHjelmare 4
* black --fast homeassistant tests
* Bump pylinky to 0.4.0 and add error user feedback
* Fix .coveragerc
* Linky platform moved to integration in config.yml and with multiple accounts
* Remove useless logs
* Review from @MartinHjelmare 5
* Add config flow tests
* Add config flow tests : login + fetch on failed
b4058b5c7f