[Clang] Enable multilib library support for Linux/Windows (#188584) Summary: This PR standardizes the logic used in the baremtal build to the common toolchain interface. We then use this to handle the support in Linux and Windows. The multilib functionality allows us to select variant libraries based off of a configuration file. For example, if the `multilib.yaml` file detects `-fsanitize=address` it will automatically use the libraries inside of `asan/` instead. These are layered so they do not necessarily need to be complete library builds. More documentation can be found at https://clang.llvm.org/docs/Multilib.html. The motivation for this is so platforms like ROCm can use a more standard way to ship debug / asan variants of libraries like OpenMP or similar for both GPU an CPU targets.
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