Adding a cuda device adapter to vtkm.
Porting the dax device adapter over to vtkm. Unlike the dax version, doesn't use the thrust::device_vector, but instead uses thrust::system calls so that we can support multiple thrust based backends. Also this has Texture Memory support for input array handles. Some more work will need to be done to ArrayHandle so that everything works when using an ArrayHandle inplace with texture memory bindings.
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