Add ability to create custom roles for site + orgs

[Emyrk]

Currently all roles are statically defined: https://github.com/coder/coder/blob/main/coderd/rbac/roles.go#L227-L227

Creating custom roles means to store dynamic roles in the database.

• Add more verbs than CRUD to remove pseudo-resources
  • Pseudo rbac resources are a consequence of a fixed set of verbs (CRUD). Expanding the allowed verbs would remove the need for these resources, making custom roles more easily defined. Custom roles need to make sense of the verbs, as now verbs will be exposed to users (not just devs). Intuitive verbs provide more value to ensure consistent behavior with expectations. chore: remove rbac psuedo resources, add custom verbs #13276
• What roles can assign what other roles is currently statically defined. This needs to accommodate dynamic roles
• Add creating org scoped roles. Likely some sort of checkbox based approach to selecting which permissions are apart of some custom role. feat: add cli command to edit custom roles #13305

Frontend

• Custom role builder