Add RBAC to Terraform provider

[kyle-ssg]

Is your feature request related to a problem? Please describe.

For a self potential hosted customer mentioned there is a fear of having to re-setup all the RBAC e.g. in the event of loss of data, they would prefer to do this as infrastructure as code.

Describe the solution you'd like.

Add the ability to define users, groups, roles and permissions via Terraform.

Describe alternatives you've considered

Some form of import / export though Terraform was mentioned as the solution / seems to make sense.

Additional context

No response