cargo: Bump `windows` crate range to `0.53-0.56`

[MarijnS95]

Allow windows 0.53 all the way up to and including 0.56 to be used, and remove some unused features from the core crate.

[Systemcluster]

The ComInterface trait seems to be just Interface since 0.53: https://github.com/microsoft/windows-rs/issues/2875#issuecomment-1962332067

I'm not sure why it's not mentioned in the release notes. Interface seems to work down to at least 0.51 though, so I think you can just replace it without bumping the lower version bound. (edit: It's just in the example anyways so it shouldn't matter much.)

[cwfitzgerald]

This would be great to get in, I've started depending on it locally. Is there anything an outsider could do to help move this along?

[MarijnS95]

Looks like 0.57 requires an MSRV bump to Rust 1.70.

[MarijnS95]

Ugh, the merge-commit title failed to update.