Backend endpoint to list and filter users (to be used by sysadmins)

[minh-biocommons]

Description

AAI-290: Back-end endpoint to list and filter users (to be used by sysadmins)

Changes

• Added filter function for the /admin/users endpoint
• Add a new endpoint to get the list of filter options for the user list
• Updated to the correct naming convention from "bpa-galaxy" to "bpa_galaxy"
• Updated/added relevant tests

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have added unit / integration tests that prove my fix is effective or that my feature works
• I have run all tests locally and they pass
• I have updated the documentation (if applicable)

[minh-biocommons]

This is a PR for adding filter functionality to the admin’s GET /users endpoint. I’m not really sure where the platforms and groups/bundles definitions should live, so for now they’re a bit scattered between models/biocommons_register and admin. We can refactor later once we decide on a single point of reference.

[amandazhuyilan]

Overall no concerns except for suggestion of the Enum group for BiocommonsGroupEnum :) Thanks for the change.

[marius-mather]

I've made a few comments about possible changes to the database/refactoring how we store information about groups and platforms - those are up for discussion and don't need to be done in this PR.

But my main comment on this is that I think we should have separate filters for group and platform, rather than trying to have a magic all-purpose filter. That will make it easier to add more filters in future, and also allow combining multiple filters.

[marius-mather]

Happy to merge this so we have an implementation of the current design - I will do some thinking around some of the refactoring that could make this a bit cleaner.