[llvm] [ORC-RT] Initial check-in for a new, top-level ORC runtime project. (PR #113499)

[Lang Hames via llvm-commits]

lhames wrote:

@vgvassilev Thanks for the ping!

@jaredwy got tests working on Darwin and Linux. @llvm-beanz @petrhosek -- any comments on whether we're approaching the test infrastructure the right way here?

https://github.com/llvm/llvm-project/pull/113499