add application file

app.py

@@ -0,0 +1,12 @@
+import gradio as gr
+
+def greet(name):
+    return "Hello " + name + "!!"
+
+iface = gr.Interface(
+    fn=greet, 
+    inputs="text", 
+    outputs="text"
+)
+
+iface.launch()