README updates

Sample only 200 rows

device choice for embedding model, cuda if supported, cpu if not

Updated dependencies

Removed old entry files

Added reset chat messages button

Single demo, toggle between single or multiagent RAG

Switched to qdrant instead of chroma because of issues with streamlit

Workaround for streamlit error

Setup to deploy on streamlit

Separate file for the streamlit_app for deploying the demo to streamlit

Separate file for single agent agentic_rag demo

Util script for sampling medical med dataset

Move on to single agent RAG

Added a modified CodeAgent prompt to use for the manager agent