feat(cloud): add a new category of Zigbee hub

It seems like everything else Tuya, there is never any end to the pointless churn.

Issue #5918

custom_components/tuya_local/cloud.py

@@ -41,6 +41,7 @@ HUB_CATEGORIES = [
     "gywg",  # Industrial gateway
     "cnwg",  # Energy gateway
     "wnykq",  # Smart IR
+    "wfcon",  # new type of Zigbee gateway
 ]