Migrate MaxPool2d layer to Tensors

include/layers/max_pool.hpp

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "layer.hpp"
+
+namespace CUDANet::Layers {
+
+class MaxPool2d : public Layer {
+  public:
+    MaxPool2d(
+        CUDANet::Shape        input_shape,
+        CUDANet::Shape        pooling_shape,
+        CUDANet::Shape        stride_shape,
+        CUDANet::Shape        padding_shape,
+        CUDANet::Backend* backend
+    );
+    ~MaxPool2d();
+
+    CUDANet::Tensor& forward(CUDANet::Tensor &input) override;
+    
+    CUDANet::Shape input_shape() override;
+
+    CUDANet::Shape output_shape() override;
+
+    size_t input_size() override;
+
+    size_t output_size() override;
+
+    void set_weights(void *input) override;
+
+    CUDANet::Tensor& get_weights() override;
+
+    void set_biases(void *input) override;
+
+    CUDANet::Tensor& get_biases() override;
+
+
+
+  private:
+    CUDANet::Shape in_shape;
+
+    CUDANet::Shape pooling_shape;
+    CUDANet::Shape stride_shape;
+    CUDANet::Shape padding_shape;
+
+    CUDANet::Shape out_shape;
+    CUDANet::Tensor output;
+
+    CUDANet::Backend *backend;
+};
+
+}  // namespace CUDANet::Layers