[CUSOLVER] cuSOLVER handler does not support multiple streams

[ericlars]

Summary

Intel llvm introduced multiple CUDA streams per SYCL queue which broke the cuSOLVER scope handler that assumed one stream per device per thread. This broke asynchronous submissions, in the short term synchronous cuSOLVER submissions should be used. See #209 and #215 for further details.

Version

All versions built with intel llvm after dd418459868a976cd2eeae367fea6b92795ea611.

Environment

cuSOLVER backend

[mmeterel]

@ericlars is this fixed and can be closed?