ROCm SPARSE marshalling library

hipSPARSE is a SPARSE marshalling library with multiple supported backends. It sits between your application and a 'worker' SPARSE library, where it marshals inputs to the backend library and marshals results to your application. hipSPARSE exports an interface that doesn't require the client to change, regardless of the chosen backend. Currently, hipSPARSE supports rocSPARSE and cuSPARSE backends.