add jinja2 template download

app.py

@@ -184,6 +184,13 @@ if st.session_state['tokenizer_json'] is not None:
                     mime='application/json',
                     use_container_width=True
                 )
+                st.download_button(
+                    label="Download chat_template.jinja2",
+                    data=st.session_state['successful_template'],
+                    file_name='chat_template.jinja2',
+                    mime='text/plain',
+                    use_container_width=True
+                )
                 if push_to_hub_button:
                     with open(f"./tmp/{st.session_state['uuid']}/tmp_chat_template.json", "w") as fp:
                         fp.write(st.session_state['successful_template'])