* support xiaomi miio sensor: cgllc.airmonitor.s1 & cgllc.airmonitor.b1
* support xiaomi miio sensor: cgllc.airmonitor.s1 & cgllc.airmonitor.b1
* rollback sensor, modify air_quality
* only set air_quality props
* remove set state from "zhimi.airmonitor.v1"
* unit_of_measurement return None when the pm25 isn't reported
* import libs by isort
* move service constants to const.py, move all custom xiaomi_miio services to xiaomi_miio domain
* update service names
* try to fix black error
* try black formatting again
* final black formatting attempt
* update service names to reflect platform
* fix typo