* 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