Investigation: Support public data

[jgadling]

Right now Platformics assumes that all endpoints require a logged-in user:

https://github.com/chanzuckerberg/platformics/blob/main/platformics/codegen/templates/api/types/class_name.py.j2#L417

We have a use case where we'd like to use Platformics as a public data portal, so some data should be accessible to users without any authentication token.

What are our options for supporting public data and private data alongside each other?

• Do we support flags in templates to en/disable requiring auth at codegen-time?
• Do we support overriding dependencies in the running api?
• Do we just generate an anonymous principal for non-logged-in users?
• How do we mark public vs private data in the db?
• What's the level of effort for implementing each of the proposed solutions?