docs: Integrate OpenApi generated documentation for admin api (DEV-3381)

[seakayone]

Added just targets, among others:

• docs-install-requirements - Install the required Python dependencies (you might want to create a virtual env for that)
• docs-serve - Start this and visit http://localhost:8000/03-endpoints/api-admin/ to see the OpenApi documentation

Out of scope for this PR is polishing the actual OpenApi documentation, I will create a followup for this.

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-3381 dsp-api: Replace docs.dasch.swiss Admin Endpoint documentation with OpenApi generated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 12.92%. Comparing base (eac5751) to head (8873cc0).
Report is 119 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3104      +/-   ##
==========================================
+ Coverage   11.74%   12.92%   +1.18%     
==========================================
  Files         246      260      +14     
  Lines       22907    22339     -568     
==========================================
+ Hits         2690     2887     +197     
+ Misses      20217    19452     -765     

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[mpro7]

@seakayone should we look at the YML file or it's auto-generated?

[seakayone]

@mpro7 You may look. It is generated just dog.