Add Revolt NX-4608

[zivillian]

Internally this is a HY02B05MB, but the PCB is different from the picture in #162. The DPs also differ from the number documentend in this issue.

I've added a picture of the device and PCB and also added the documentation I've found.

This may for now fix #162, since all implemented DPs are equal, but I'm not able to verify this.

[KG3RK3N]

Tested with the same device like #162, seems work.
Note: Its necessary to disable the setting "Relay at GPIO 5", otherwise the state switch always between off and heating if the state should heating.

{
  "idx": "thermostat_1234",
  "ip": "xx.xx.xx.xx",
  "alive": true,
  "firmware": "1.20n",
  "temperature": 17.5,
  "targetTemperature": 15,
  "floorTemperature": 19,
  "deviceOn": true,
  "schedulesMode": "auto",
  "locked": false,
  "state": "off",
  "sensorSelection": "both"
}