Rename dim2d to shape2d

include/kernels/convolution.cuh

@@ -25,13 +25,13 @@ __global__ void convolution(
     const float* __restrict__ d_kernel,
     const float* __restrict__ d_bias,
     float* __restrict__ d_output,
-    const dim2d inputSize,
+    const shape2d inputSize,
     const int nChannels,
-    const dim2d paddingSize,
-    const dim2d kernelSize,
-    const dim2d stride,
+    const shape2d paddingSize,
+    const shape2d kernelSize,
+    const shape2d stride,
     const int nFilters,
-    const dim2d outputSize
+    const shape2d outputSize
 );
 
 }  // namespace CUDANet::Kernels