App file (#12)

* adding app file

* linting:

app.py

@@ -1,4 +1,6 @@
+"""this is the base app"""
+
 from src.app import main
 
 if __name__ == "__main__":
-    main()
+    main()

src/app.py

@@ -4,11 +4,12 @@ import openai
 import streamlit as st
 from openai import OpenAI
 
+
 def return_true():
-    """_summary_
-    """
+    """_summary_"""
     return True
 
+
 def reset_history():
     """_summary_"""
     st.session_state.messages = []