Migrate from windows-targets to windows-link

[djc]

From the upstream release notes:

This release is focused on upgrading the ecosystem to standardize on the windows-link crate for universal raw-dylib support on Windows. This avoids all kinds of build complexity and undesirable complexity in dealing with the linker directly via import libs.

To date, the only major Windows crate that still uses the older windows-targets crate for linking is the windows-sys crate. This release updates windows-sys to depend on windows-link and thus raw-dylib unconditionally. This is required for some internal OS and Azure scenarios. It should also meaningfully reduce build time in general since the large windows-targets import lib crates no longer need to be downloaded at all.

I am also using this release as an opportunity to update all of the remaining crates to use the latest version of windows-link which itself receives a major update to finally stop overwriting the ABI (microsoft/windows-rs#3689), fixing a cross-target compatibility issue.

With this update, Rust for Windows no longer offers any crates that depend on the windows-targets crate. Although very stable, it will remain supported by this repo for the foreseeable future should there ever be a reason to service it. I do not however plan to provide any non-essential updates to the windows-targets crate. You should instead use the windows-link crate.

[nagisa]

The CI failure seems unrelated.

This LGTM so far, but I'll probably only be able to get to merging this on the weekend. Thank you!