Ongoing: Official Rust WDK support

[MolotovCherry]

Work is ongoing at the wdkmetadata repository to get the metadata bindings done, and ultimately into windows-rs. Once enough of it is done, we can ditch all the manual binding crates here and fix up the driver code to be even more idiomatic. 😃

Tracking issue https://github.com/microsoft/wdkmetadata/issues/49

Another to keep track of: https://github.com/microsoft/windows-drivers-rs and https://github.com/microsoft/windows-drivers-rs/discussions/13