RSE TYWFH301 Gate: make raw return_state available

Add raw return_state as an attribute of the Gate sensor, as the two
binary sensors do not cover the full range of values.

Issue #2462

custom_components/tuya_local/devices/rse_tywfh301_gate.yaml

@@ -77,6 +77,9 @@ secondary_entities:
           - dps_val: 12
             value: true
           - value: false
+      - id: 105
+        type: integer
+        name: return_state
       - id: 111
         type: boolean
         name: hidden_state