dev(hanshug): add queue

app.py

@@ -1,3 +1,5 @@
+import os
+
 import gradio as gr
 import numpy as np
 from PIL import Image
@@ -65,4 +67,4 @@ if __name__ == '__main__':
             outputs=[ch_output],
         )
 
-    demo.launch()
+    demo.queue(os.cpu_count()).launch()