* start of fan groups
* update fan classes
* update group entity domains
* add set speed
* update discovery for multiple entities for groups
* add fan group entity tests
* cleanup const
* cleanup entity_domain usage
* remove bad super call
* remove bad update line
* fix set speed on fan group
* change comparison
* pythonic list
* discovery guards
* Update homeassistant/components/zha/core/discovery.py
Co-Authored-By: Alexei Chetroi <lexoid@gmail.com>
Co-authored-by: Alexei Chetroi <lexoid@gmail.com>