Update requirements.txt: backend deployment

Update api_server - deployment

Update UI Frontend + API

Delete sensitive auth_db.json

Update UI Frontend version 1.2.0 + Backend Integration

Update main.py and README.md version 1.1.0

Create Q&A Report Evaluation

Update evaluation_mode.py & interactive_mode.py version 1.1.0

hf_engine.py & sql_agent.py version 1.1.0

Debugging

Merge branch 'main' into NL2SQL-V1.0

Folder and Files Structure Refactor