Support for more emerging target platforms

[mcandre]

Checklist

• I've looked through the issues and pull requests for similar request
• This feature could be solved with a custom image (optional)

Describe your request

Rust 1.28.0 promotes even more target platforms up the tier ladder.

https://github.com/rust-lang/rust/releases/tag/1.82.0

Describe why this would be a good inclusion for cross

Assist Rust developers with making it super easy to support a wide range of different runtime platforms.

Steal thunder from Go's builtin cross compilation.

[Emilgardis]

Going to close this issue if thats ok with you. This will always be a goal of cross. I'd prefer one issue per new target. Also, only the tier 2 targets should be added here, but the t3 targets can be supported too via cross-toolchains.