Lefant M213: additional error code based on use.

custom_components/tuya_local/devices/lefant_m213_vacuum.yaml

@@ -88,6 +88,8 @@ primary_entity:
           value: land_check
         - dps_val: 64
           value: collision
+        - dps_val: 512
+          value: low_battery
         - dps_val: 1024
           value: stuck
     - id: 19