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

[Arvind Sudarsanam via cfe-commits]

asudarsa wrote:

Earlier test fail due to lack of new tool in clang/test/lit.cfg.py.
Added it now. 

Thanks

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