[Fix] Fix LW-DETR & Minor updates

[felixdittrich92]

• Fix LW-DETR (Model, Postprocessing, Loss)
• Fix / Update ttrain scripts
• minor RandomCrop fix
• Updated cor test
• Fix hf hub factory readme

[codecov]

Codecov Report

❌ Patch coverage is 97.23757% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.92%. Comparing base (bc0db21) to head (1beceef).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
doctr/models/layout/lw_detr/pytorch.py	96.06%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2068      +/-   ##
==========================================
+ Coverage   96.70%   96.92%   +0.22%     
==========================================
  Files         156      156              
  Lines        7276     7375      +99     
==========================================
+ Hits         7036     7148     +112     
+ Misses        240      227      -13     

Flag	Coverage Δ
unittests	96.92% <97.23%> (+0.22%)	⬆️

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

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.