feat: Add additional project export route that awaits the process

[BalduinLandolt]

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

[mpro7]

Looks good. Two minor suggestions below.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 13.14%. Comparing base (eac5751) to head (5b10f78).
Report is 144 commits behind head on main.

Files	Patch %	Lines
...ce/admin/domain/service/ProjectExportService.scala	0.00%	4 Missing ⚠️
...api/slice/admin/api/ProjectsEndpointsHandler.scala	0.00%	3 Missing ⚠️
...ice/admin/api/service/ProjectsADMRestService.scala	0.00%	3 Missing ⚠️
...ora/webapi/slice/admin/api/ProjectsEndpoints.scala	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3136      +/-   ##
==========================================
+ Coverage   11.74%   13.14%   +1.40%     
==========================================
  Files         246      264      +18     
  Lines       22907    22404     -503     
==========================================
+ Hits         2690     2945     +255     
+ Misses      20217    19459     -758     

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