Google Assistant SDK integration (#82328)

* Copy google_sheets to google_assistant_sdk

This is to improve diff of the next commit with the actual implementation.

Commands used:
cp -r homeassistant/components/google_sheets/ homeassistant/components/google_assistant_sdk/
cp -r tests/components/google_sheets/ tests/components/google_assistant_sdk/

find homeassistant/components/google_assistant_sdk/ tests/components/google_assistant_sdk/ -type f | xargs sed -i \
-e 's@google_sheets@google_assistant_sdk@g' \
-e 's@Google Sheets@Google Assistant SDK@g' \
-e 's@tkdrob@tronikos@g'

* Google Assistant SDK integration
Allows sending commands and broadcast messages to Google Assistant.

* Remove unnecessary async_entry_has_scopes check

* Bump gassist-text to fix protobuf dependency

homeassistant/generated/application_credentials.py

@@ -6,6 +6,7 @@ To update, run python3 -m script.hassfest
 APPLICATION_CREDENTIALS = [
     "geocaching",
     "google",
+    "google_assistant_sdk",
     "google_sheets",
     "home_connect",
     "lametric",