Add Wolflink integration (#34104)

* WOLF Smart-set integration

* Removed translations. Changed device class of timestamp. Added new test for unknown exception

* Remove unit_of_measurement from hours sensor

* Code cleanup. Pull Request comments fixes

* ConnectError import change. Removed DEVICE_CLASS_TIMESTAMP

* Add unique id guard with tests. Use common translations. Move device_id resolution to config_flow.

* Remove debug print

homeassistant/generated/config_flows.py

@@ -186,6 +186,7 @@ FLOWS = [
     "wiffi",
     "withings",
     "wled",
+    "wolflink",
     "xiaomi_aqara",
     "xiaomi_miio",
     "zerproc",