Support oAuth Token for all resources

[anton-freyberg]

Is your feature request related to a problem? Please describe. The api token for terraform needs full settings.write access (it's not allowed to be scoped e.g. with a PAT). The oAuth token could be scoped very precisely through its service user.

Describe the solution you'd like we support deploying all configurations trough terraform just with an Oauth client secret.

Describe alternatives you've considered I tried using PAT which can also be scoped, but they are not allowed.