Right now, it used the example [cnn](https://github.com/NNgen/nngen/blob/develop/examples/cnn/cnn.py), but also do: [resnet18](https://github.com/NNgen/nngen/blob/develop/examples/torchvision_onnx_resnet18/torchvision_onnx_resnet18.py) This should be done as a subdesign like we did with liteeth submodules.
