[clang] [Clang][SYCL] Introduce clang-sycl-linker to link SYCL offloading device code (Part 1 of many) (PR #112245)

[Arvind Sudarsanam via cfe-commits]

asudarsa wrote:

@bader, thanks for adding the SYCL label. Can you please provide your feedback for this PR when convenient? For some reason, I am not able to add reviewers.

Thanks

https://github.com/llvm/llvm-project/pull/112245