Add app.py as a backup entry point

app.py

@@ -0,0 +1,14 @@
+import gradio as gr
+import nbformat
+from nbconvert import PythonExporter
+import subprocess
+
+def run_notebook():
+    with open("app.ipynb") as f:
+        notebook = nbformat.read(f, as_version=4)
+    python_script, _ = PythonExporter().from_notebook_node(notebook)
+    with open("app_temp.py", "w") as f:
+        f.write(python_script)
+    subprocess.run(["python", "app_temp.py"])
+
+run_notebook()