Add HTTP authentication scheme evaluation tests and documentation (#21)

* Initial plan

* Add comprehensive HTTP authentication evaluation tests

Co-authored-by: laeubi <1331477+laeubi@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: laeubi <1331477+laeubi@users.noreply.github.com>

Author: Copilot