clang/win: Add a flag to disable default-linking of compiler-rt libraries (#89642)

For ASan, users already manually have to pass in the path to the lib,
and for other libraries they have to pass in the path to the libpath.

With LLVM's unreliable name of the lib (due to
LLVM_ENABLE_PER_TARGET_RUNTIME_DIR confusion and whatnot), it's useful
to be able to opt in to just explicitly passing the paths to the libs
everywhere.

Follow-up of sorts to https://reviews.llvm.org/D65543, and to #87866.