Setup Google Cloud from the UI (#121502)

* Google Cloud can now be setup from the UI

* mypy

* Add BaseGoogleCloudProvider

* Allow clearing options in the UI

* Address feedback

* Don't translate Google Cloud title

* mypy

* Revert strict typing changes

* Address comments

homeassistant/generated/config_flows.py

@@ -222,6 +222,7 @@ FLOWS = {
         "goodwe",
         "google",
         "google_assistant_sdk",
+        "google_cloud",
         "google_generative_ai_conversation",
         "google_mail",
         "google_photos",