Add CI build for windows/ARM64

[alcroito]

Tests and other steps that execute the binary are skipped, because the project is built on an x86_64 Windows host machine and thus can't run arm64 instructions.

Fixes: #2644

[alcroito]

I used #2691 as a base, and modified the CI yaml to skip running the tests, as previously suggested at #2691 (comment)

In the near future we might be able to build on arm windows CI runners directly as per

https://github.com/orgs/community/discussions/19197#discussioncomment-11946571

[jcotton42]

ARM64 Windows runners are now available https://blogs.windows.com/windowsdeveloper/2025/04/14/github-actions-now-supports-windows-on-arm-runners-for-all-public-repos/

[jcotton42]

@alcroito the dtolnay/rust-toolchain action used by this repo has been updated to work on Windows ARM. The changes from there should be pretty minimal, I just did it for ripgrep https://github.com/BurntSushi/ripgrep/pull/3038/files

[Enselic]

this looks good code-wise, can this be rebased to resolve conflicts please? thanks

[alcroito]

Fixed the MR to use native arm runners for the build.

[Enselic]

looks good, thanks!