Add USM cublasSgemm (#21)

Update CUDA examples to work with recent DPC++ (#12)

* Update CUDA examples to work with recent DPC++

* Addressing feedback from reviews

[SYCL] Initial commit of interop example (#2)

[SYCL] Initial commit of interop example

Example that uses the interop task on the Command Group handler to interop with CUBLAS, alongside the original CUBLAS example.