[llvm] [workflows] Port buildkite Windows config to GitHub actions (PR #82093)

[Mehdi Amini via llvm-commits]

joker-eph wrote:

> It has been mentioned multiple times that there are technical limitations that need to be taken into account. 

Please point me to the "multiple times" where this has been detailed, I think I followed the discussion, yet I don't know what you mean.

> I'd prefer myself if powerful Windows machines on BuildKite that have capacity for every project have been working properly, but it's not the case.

I don't quite see this as answering my concerns right now.



https://github.com/llvm/llvm-project/pull/82093