[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:

Hi @llvm-beanz 

Thanks so much for providing your valuable time and feedback thus far. I have addressed the concerns raised to the best of my ability. I have added more testing inside 'clang/test/Driver/clang-sycl-linker-test.cpp'. It will be great if you can take another look when convenient and let me know if there are additional concerns.

Thanks
Sincerely

P.S: About the location of this tool under clang/tools, I added the tool here as it is somewhat similar in functionality to tools like clang-linker-wrapper and clang-nvlink-wrapper. If there is strong opposition, we can surely move it to llvm/tools.

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