[clang] [llvm] [clang] Support ASan on WASI (PR #139014)

[Yuta Saito via llvm-commits]

kateinoigakukun wrote:

> presumably the sanitizer runtime will end up alongside wasi-libc in the wasi SDK?

@dschuff Yes, it will be placed alongside the other clang_rt libraries in WASI SDK and Swift SDK for Wasm

https://github.com/llvm/llvm-project/pull/139014