Added identity copy filter for testing purposes

src/c/Cuda/CWrappers.cu

src/c/Cuda/CWrappers.h

src/c/Cuda/CudaIdentityFilter.cuh

src/c/CudaImageProcessor.vcxproj

src/c/CudaImageProcessor.vcxproj.filters

src/c/CudaMex.vcxproj

src/c/CudaMex.vcxproj.filters

src/c/CudaPy3DLL.vcxproj

src/c/CudaPy3DLL.vcxproj.filters

src/c/Mex/MexIdentityFilter.cpp

src/c/Python/PyWrapIdentityFilter.cpp

src/c/WrapCmds/CommandList.h