[Feature Request] Fan/Blower "additional" mode

[KairuByte]

One thing I have been missing from generic thermostats, is a fan/blower mode, that can also be tied into the main modes.

In my case, for the heat mode I have a simple space heater, and run a fan directly in front of it to help circulate the heat. I tend to let the fan blow for a few minutes, before it starts moving "cold air".

On the other hand, the cooling is essentially just the fan.

It would be nice to have the fan included in the heat and cool of the run cycles. Currently I simply group the switches, but it's not nearly as elegant a solution.