[DOC] - Document scopes for each service within Nebari and what that gives you access to

[dcmcand]

Preliminary Checks

• This issue is not a question, feature request, RFC, or anything other than a bug report. Please post those things in GitHub Discussions: https://github.com/nebari-dev/nebari/discussions

Summary

Document scopes for each service within Nebari and what that gives you access to.

Steps to Resolve this Issue

1.Document Keycloak scopes
2. Document conda-store scopes
3. Document Jupyterlab scopes
4. Document Jupyterhub scopes
5. Document Grafana scopes

What else needs put here?
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