Add switch to Tuya thermostat: child_lock (#113052)

homeassistant/components/tuya/switch.py

@@ -520,6 +520,15 @@ SWITCHES: dict[str, tuple[SwitchEntityDescription, ...]] = {
             entity_category=EntityCategory.CONFIG,
         ),
     ),
+    # Thermostat
+    # https://developer.tuya.com/en/docs/iot/f?id=K9gf45ld5l0t9
+    "wk": (
+        SwitchEntityDescription(
+            key=DPCode.CHILD_LOCK,
+            translation_key="child_lock",
+            entity_category=EntityCategory.CONFIG,
+        ),
+    ),
     # Thermostatic Radiator Valve
     # Not documented
     "wkf": (