Add welcome message to Pivot Finder for user guidance

src/streamlit_app.py

@@ -136,6 +136,7 @@ selected_tab = st.segmented_control(
 
 if selected_tab == 'Pivot Finder':
     with st.expander("Infos and Filters"):
+        st.info("Welcome to the Pivot Finder! Select a player or a set of players and run the algorithm to find the best spots to pivot for maximum relative value.")
         app_info_column, player_select_column, micro_filter_column, macro_filter_column = st.columns(4)
         with app_info_column:
             st.info(t_stamp)