perf: cache auth request in memory

[adlerhurst]

Introduces an inmemory cache for auth requests, the cache also includes the policies.

Part of #7639

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 23, 2024 11:23am

[codecov]

Codecov Report

Attention: Patch coverage is 46.90265% with 60 lines in your changes are missing coverage. Please review.

Project coverage is 62.82%. Comparing base (cc56eea) to head (24e3022).
Report is 395 commits behind head on main.

❗ Current head 24e3022 differs from pull request most recent head 4e5c017. Consider uploading reports for the commit 4e5c017 to get more accurate results

Files	Patch %	Lines
internal/auth_request/repository/cache/cache.go	42.62%	32 Missing and 3 partials ⚠️
...epository/eventsourcing/eventstore/auth_request.go	43.18%	18 Missing and 7 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #7824       +/-   ##
===========================================
+ Coverage   50.10%   62.82%   +12.72%     
===========================================
  Files        1244     1312       +68     
  Lines      117337   108796     -8541     
===========================================
+ Hits        58788    68354     +9566     
+ Misses      55594    36503    -19091     
- Partials     2955     3939      +984     

Flag	Coverage Δ
core-integration-tests-postgres	62.82% <46.90%> (+38.39%)	⬆️
core-unit-tests	?

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[github-actions]

🎉 This PR is included in version 2.51.0 🎉

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