add packgaes to requirements

app.py

@@ -1,11 +1,11 @@
 import gradio as gr
 from fastai.vision.all import *
 
+def is_cat(x): return x[0].isupper() 
+
 learner = load_learner("model.pkl")
 categories = ("cat", "dog")
 
-def is_cat(x): return x[0].isupper() 
-
 def classify_image(img):
     pred, pred_idx, probs = learner.predict(img)
     return {categories[i]: float(probs[i]) for i in range(len(categories))}