refactored project to use poetry

rag_system/app/streamlit_app.py

@@ -0,0 +1,9 @@
+import streamlit as st
+from rag_system.app.rag_chain import get_rag_response
+
+st.title("RAG System")
+query = st.text_input("Ask a question:")
+if query:
+    response = get_rag_response(query)
+    st.write("### Response:")
+    st.write(response)