Added Authentik support

[nanawel]

This PR adds support for Authentik as OIDP.
It is heavily inspired from #2386 (Keycloak support).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.62%. Comparing base (15c8908) to head (08db13d).
Report is 4 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (15c8908) and HEAD (08db13d). Click for more details.

HEAD has 12 uploads less than BASE

Flag	BASE (15c8908)	HEAD (08db13d)
	18	6

Additional details and impacted files

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles