chore(autorag+automl): RESTful refactor of S3 BFF endpoints

[GAUNSD]

Issues

• https://redhat.atlassian.net/browse/RHOAIENG-54357

Description

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.03%. Comparing base (06561b0) to head (13db237).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7358      +/-   ##
==========================================
+ Coverage   63.89%   65.03%   +1.14%     
==========================================
  Files        2513     2458      -55     
  Lines       77939    76402    -1537     
  Branches    19818    19278     -540     
==========================================
- Hits        49797    49691     -106     
+ Misses      28142    26711    -1431     

see 64 files with indirect coverage changes

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