refactor: Migrate admin/permissions endpoints to tapir (DEV-1590)

[seakayone]

Pull Request Checklist

Task Description/Number

Issue Number: DEV-

PR Type

• build/chore: maintenance tasks (no production code change)
• docs: documentation changes (no production code change)
• feat: represents new features
• fix: represents bug fixes
• perf: performance improvements
• refactor: represents production code refactoring
• test: adding or refactoring tests (no production code change)

Basic requirements for bug fixes and features

• Tests for the changes have been added
• Docs have been added / updated

Does this PR introduce a breaking change?

• Yes

Does this PR change client-test-data?

• Yes

[linear]

DEV-1590 DSP-API: Migrate admin/permissions routes to tapir

[swarmia]

✅  Linked to Story DEV-1590 · DSP-API: Expose admin/permissions routes with ZIO HTTP
➡️  Part of Epic DEV-1380 · C: DSP-API Introduce ZIO HTTP

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (eac5751) 11.74% compared to head (65ee8f2) 11.72%.
Report is 10 commits behind head on main.

Files	Patch %	Lines
webapi/src/main/scala/dsp/valueobjects/User.scala	64.28%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2975      +/-   ##
==========================================
- Coverage   11.74%   11.72%   -0.02%     
==========================================
  Files         246      250       +4     
  Lines       22907    22925      +18     
==========================================
- Hits         2690     2689       -1     
- Misses      20217    20236      +19     

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[BalduinLandolt]

Not the most detailed review from my side, but overall looks good, much cleaner than before. (Spotted one typo)

[mpro7]

Only 2 minor comments you can ignore for now.