Vevor EV charger: add US model

Issue #1757

custom_components/tuya_local/devices/vevor_ev_charger.yaml

@@ -2,6 +2,8 @@ name: Portable EV charger
 products:
   - id: otugaigzdqfyc9er
     name: Vevor SS EU Mode2 7kW
+  - id: w7lvyyxyevpwf20e
+    name: Vevor SS US 7kW
 primary_entity:
   entity: sensor
   name: Status