Enable "connect to review source" via API

I want to automate the whole workflow from

- creating a customer in EMR
- creating a location
- connecting to a review source
- creating a feedback form and campaign
- sending review requests

The feedback form and campaign can be created via the onboarding blueprints as far as I can see, and I can send create customers and send review requests via API.

But connecting to a Google source isn't possible. And I’d love for it to be, so I can get new customers up and running as soon as they submit their info on my website.