[clang] [compiler-rt] [tsan] Add simulation to TSAN (PR #183200)

[Vitaly Buka via cfe-commits]

vitalybuka wrote:

> Sorry the review took so long. I hope the code hasn't changed much and there won't be too many merge conflicts. Overall it looks good to me. @vitalybuka please merge this once comments are resolved.

If it's not urgent, I'd like to do so in a couple of weeks.

https://github.com/llvm/llvm-project/pull/183200