Merge branch 'main' of https://github.com/Ehsan-Taheri/ChatBot-RAG

Update streamlit_app.py

Update requirements.txt

Update document_processing.py

Update streamlit_app.py

Merge branch 'main' of https://github.com/Ehsan-Taheri/ChatBot-RAG

add documentation

Update streamlit_app.py

Update .DS_Store

Delete .DS_Store

Delete vector store/.DS_Store

last change

Update streamlit_app.py

Update streamlit_app.py

chatbot and document processing