Electriq CD12Pro: changes suggested in review
- use a fan entity
- remove current_humidity from humidifier entity, as it is not standard and duplicates the sensor.
- add fault_code to humidifier, as the Tank binary sensor loses some info.
- rename Light to Indicator light
- add some more config categories to non-primary switches - basically the humidifier, fan and current humidity sensor are main, others are config/diagnostic.