Automatically generate config flow list (#23802)

* Add config flow to manifest.json

* Still load config flows via config flow platform

* Fix typo

* Lint

* Update config_flows.py"

* Catch import error when setting up entry

* Lint

* Fix tests

* Fix imports

* Lint

* Fix Unifi tests

* Fix translation test

* Add homekit_controller config flow

homeassistant/components/dialogflow/config_flow.py

@@ -0,0 +1,13 @@
+"""Config flow for DialogFlow."""
+from homeassistant.helpers import config_entry_flow
+from .const import DOMAIN
+
+
+config_entry_flow.register_webhook_flow(
+    DOMAIN,
+    'Dialogflow Webhook',
+    {
+        'dialogflow_url': 'https://dialogflow.com/docs/fulfillment#webhook',
+        'docs_url': 'https://www.home-assistant.io/components/dialogflow/'
+    }
+)