Adding an option to show HS220 (dimmer switch) as Fan 
### Current Situation

In the Home app, HS220 (dimmer switch) shows up as light only. HS200 (non-dimmer switch) has three options: light, plug, and fan. 

### Proposed Change

Please add an option to show HS220 as a fan. I use HS220 for a ceiling fan control in the bedroom since HS200 has some noise when turning on/off so it can disturb sleep.  But I can't show it as a fan. 

I can use homebridge-dummy switch for a wrapper of the ceiling fan but it's not ideal.