Tracking Issue for promoting aarch64-pc-windows-msvc to a Tier 1 target

This is a tracking issue for the RFC "Tier 1 aarch64-pc-windows-msvc" (rust-lang/rfcs#3817).

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.
Discussion comments will get marked as off-topic or deleted.
Repeated discussions on the tracking issue may lead to the tracking issue getting locked.

Steps

• Adjust the target documentation https://github.com/rust-lang/rust/pull/145682
• Ensure an entry in the release blog post EDIT: seems like relnotes is sufficient

Implementation history

• Add tests to rust-lang/rust CI: https://github.com/rust-lang/rust/pull/140136
• Add tests to Cargo CI: https://github.com/rust-lang/cargo/pull/15790
• Adjust documentation https://github.com/rust-lang/rust/pull/145682

Review RFC 3817 and the tracking checklist first. Start with the target documentation change in rust-lang/rust#145682, using the existing Rust CI and Cargo CI pull requests as context. Done means the documentation step is completed and the checklist accurately reflects the target's promotion progress.