feat(devices): Add Avatto WT20R WiFi Knob Thermostat support (#5155)

custom_components/tuya_local/devices/avatto_wt20r_thermostat.yaml

@@ -3,6 +3,9 @@ products:
   - id: axhyyv6w36e5oagp
     manufacturer: Avatto
     model: WS20R smart knob
+  - id: t94pit6zjbask9qo
+    manufacturer: Avatto
+    model: WT20R WiFi Knob Thermostat
 entities:
   - entity: climate
     translation_key: thermostat