Bitrise API - Support adding team members when registering new app

Description of the feature request

Currently after adding new app we need to log in to Bitrise UI and manually add team members to the project. It would be great to be able to add organization groups during app registration. For example the “apps/{appSlug}/finish” endpoint could take addtional parameter with information which organization groups should have access to the app.

Use case / for what or how I would use it

In our team we need to very often create customized app for new customers. We are trying to automate this process as much as possible. Adding ability to automatically add team members to the new app via Bitrise API would allow us to skip this manual step which is easy to forget even when using Bitrise UI