Add distance sensor (DP 122) to ZG-205W mmWave profile (#4571)

* feat(devices): add distance sensor to ZG-205W profile

* fix(devices): make ZG-205W distance optional

custom_components/tuya_local/devices/zg205w_mmWave_presence_sensor.yaml

@@ -70,6 +70,25 @@ entities:
         name: sensor
         unit: lx
         class: measurement
+  - entity: sensor
+    name: Distance
+    icon: mdi:signal-distance-variant
+    hidden: unavailable
+    dps:
+      - id: 122
+        type: integer
+        optional: true
+        name: sensor
+        unit: cm
+        class: measurement
+      - id: 122
+        type: integer
+        optional: true
+        name: available
+        mapping:
+          - dps_val: null
+            value: false
+          - value: true
   - entity: number
     name: Stationary sensitivity
     category: config