New Shelly TRV BLU integration

[Bieniu (Maciek)]

@tomg1970

How can I integrate the Shelly BLU TRV gen3 via ZHA?
So that I can use it as a climate device?

The device must use firmware 1.1.0 or newer and when you push the button (behind the battery cover) 3 times the pairing process will start.