Add support for authorization (authentication)

[JeremyLikness]

Is your feature request related to a problem? Please describe.
Provide restrictions based on authentication.

Describe the solution you'd like

• Require the user to be authorized to access a data context and/or collection.
• Provide a callback for fine-grained access based on role, claims, etc.

Describe alternatives you've considered
N/a

Additional context
N/A