Rehau Nea Smart integration

Hi @vcalzolari64 and @pistunut ,

my new house is almost ready and I will have 8 thermostats I’d really like to integrate with Home assistant.

I can help (when the house will be ready) for the hardware part, in the meantime I can support you in the development part, documentation and Github part (I’m a full time software engineer).

Please keep me posted