front: tests: fix RTK config and add integration test

[bloussou]

This PR is fixing RTK config and adding a test to ensure that openapi.yml files and middleware files are synchronized.

Two commits to show that the test is working

close #3460

[codecov]

Codecov Report

Merging #3462 (544bcba) into dev (bb239c2) will increase coverage by 0.17%.
The diff coverage is 95.96%.

@@             Coverage Diff              @@
##                dev    #3462      +/-   ##
============================================
+ Coverage     67.73%   67.90%   +0.17%     
  Complexity     1880     1880              
============================================
  Files           404      404              
  Lines         19940    20059     +119     
  Branches       1501     1501              
============================================
+ Hits          13506    13621     +115     
- Misses         5750     5754       +4     
  Partials        684      684              

Flag	Coverage Δ
front	55.67% <95.96%> (+0.54%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
front/src/common/api/osrdEditoastApi.ts	93.14% <95.49%> (+0.59%)	⬆️
front/src/common/api/osrdMiddlewareApi.ts	91.49% <100.00%> (+0.08%)	⬆️

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[eckter]

I only reviewed the test, which I can't even review that much because I don't know how the front handles this