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

[Chris B via cfe-commits]

llvm-beanz wrote:

It seems to me like this should be done through the LTO interface and driven through `lld`. I can understand if an intermediate step is required while the SPIR-V backend is under development, but clang shouldn't be in the business of linking, and generally neither should llvm-link.

I'd be curious for @MaskRay's perspective too.

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