It would be great to have Google Form integration. As google API (via OAuth) support is available, hence Google Form integration would be straightforward (I guess).
Even though with Google sheet integration, user can monitor update to sheet and get google form submitted responses.
But my use case form creator does not want to give access to google form response sheet. It only allow access to form response with response id (https://developers.google.com/apps-script/reference/forms/form#getResponse(String)).
So only following scope are allowed -
I have tried writing Google Add-on but their publishing process is very time consuming (They rejected 3 times already). So thinking of use