feat(smartplugv2_energy): add compatible Knightsbridge plug adaptor

Issue #5731

custom_components/tuya_local/devices/smartplugv2_energy.yaml

@@ -27,6 +27,8 @@ products:
   - id: i4fg8sszym1rtqz7
     manufacturer: Voltcraft
     model: SEM6500
+  - id: 0xkfxmdog6hg9ae1
+    manufacturer: Knightsbridge
 entities:
   - entity: switch
     class: outlet