new GDI Region code rewrite using rust

[fearless]

Source: https://twitter.com/aionescu/status/1656609832797888519?s=20

If you're on the Win11 Insider ring, you're getting the first taste of Rust in the Windows kernel!

For context, this is the new GDI Region (https://learn.microsoft.com/en-us/windows/win32/gdi/regions) code rewrite (RegionCore) which is an initial experiment. This is why there’s a size difference. It’s not just a wrapper to C, but obviously it’s not a rewrite of 35 years of code either.