* feat: Member roles are implied and never exlpicitly added
* Rename "GetAllUserRoles" to "GetAuthorizationRoles"
* feat: Add migration to remove implied roles
* rename user auth role middleware
* test: Unit test to assert role permissions
This unit test allows for asserting which roles can perform
actions on various objects. This is much easier than making
unit tests to hit the api.
This PR adds an RBAC package for managing using permissions:
- The top-level `authz.Authorize` function is the main user-facing entrypoint to the package.
- Actual permission evaluation is handled in `policy.rego`.
- Unit tests for `authz.Authorize` are in `authz_test.go`
- Documentation for the package is in `README.md`.
Co-authored-by: Cian Johnston <cian@coder.com>
