added dummy chat_input component of streamlit

app.py

@@ -1,4 +1,7 @@
 import streamlit as st
 
-x = st.slider('Select a value')
-st.write(x, 'squared is', x * x)
+import streamlit as st
+
+prompt = st.chat_input("Say something")
+if prompt:
+    st.write(f"User has sent the following prompt: {prompt}")