Merge pull request #1 from DHANUSH-MURTHY/unify-llm-evaluation-logic-16064510721066480929

Unify LLM judge logic and align with standard evaluation

adding react frontend fies

adding backend

Delete my_agent_systems/evaluation

Create evaluation

Add files via upload

Refactor logging for query and response parts

Update environment variables for Google Cloud settings

Enhance error handling and environment variable check

Update README.md

Update README.md

Create callback_logging.py

Add files via upload

Update agent.py