adding options to runtime initialization

app.py

@@ -46,8 +46,9 @@ def load_model(model: str, activation: bool=True):
     
     print(model)
     
-    ort_session = ort.InferenceSession(model_path + '%s.onnx' % (model))
-    ort_session.intra_op_num_threads = 0
+    sess_options = ort.SessionOptions()
+    sess_options.intra_op_num_threads = 0
+    ort_session = ort.InferenceSession(model_path + '%s.onnx' % (model), sess_options)
     
     return ort_session