Acceptance Criteria

• Refactor code that is too long/too complex:
  • router.test.ts: most of the tests here can move under specific handler tests (under `src/service/handlers`)
    • The remaining tests could cover other cases like the auth layer
  • Code duplication in bulkimports.test.ts and router.test.ts reported by SonarCloud
  • githubApiService.ts: could reduce complexity of some functions
  • Split catalogInfoGenerator into different files. Its name does not reflect what it does.
• Add more tests
  • pagination.ts 
• Move generated code (like openapi.d.ts or openapidocument.ts) under a `src/generated` folder
• ...