chore: complete production-grade repository restructuring and clean setup.cfg

Merge branch 'main' of https://github.com/RedSamurai07/LLM-and-RAG-Application-GenAI-

Add DEPLOYMENT.md and ModelCard.md for production documentation

Update README.md

Fix: merge CI workflows, fix Codecov token, ignore test_pipeline.py

Fix: use RAG_CODECOV_KEY secret for Codecov upload

Fix: upgrade CI actions to v4/v5, fix Codecov upload

Update README.md

Add src modules, tests, CI workflow, and Codecov config

Update README.md

Cleanup repository and set up automated Hugging Face sync

Fix workflow location - move to .github/workflows/

Fix numpy version, imports, optimized Docker setup, and CI Pipeline