AAI-228 Add pagination to admin endpoints that return multiple results

[marius-mather]

Description

AAI-228: paginate responses that return multiple users: Auth0 endpoints return a maximum of 100 users at a time so we need to paginate if we have more users than that.

Changes

• Add pagination params to Auth0Client methods: page and per_page
• Add pagination params to our admin endpoints as query params
• Add tests of pagination params

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)

How to Test Manually (if necessary)

Run uv run pytest

[amandazhuyilan]

No complaints - lets ship it!