UX Improvements (wizard?) for OAuth clients

[balsama]

Headless UI goes a long way towards unifying common actions. But within those main groups, configuration is still pretty confusing. I'd specifically like to see a wizard that steps admins through the following:

1. Create new client
2. Present a list of available roles (Lightning Roles + custom)
3. If no current role suits the client, present create/configure role forms
4. Automatically create a user with selected roles
5. Generate the rest of the client information (secret, UUID, etc) and present it to the user