update template code

mmp/a5/model.py

@@ -0,0 +1,9 @@
+import torch
+
+
+class MmpNet(torch.nn.Module):
+    def __init__(self, num_widths: int, num_aspect_ratios: int):
+        raise NotImplementedError()
+
+    def forward(self, x: torch.Tensor) -> torch.Tensor:
+        raise NotImplementedError()