This adds support for the rust toolchain through rustup. It also adds a dedicated cargo binstall port in the form of pipi/npmi that supports fallback to building using a rust toolchain if cargo-binstall is unable to locate built versions of the crate.

Motivation and context

This was an obvious missing piece in ghjk. Some targets, like arm, sometimes don't have binary distributions that cargo-binstall is able to locate which resulted broken CI runs.

Migration notes

Users of wasm-opt, wasm-tools, whiz and cargo-insta ports should now use the cargobi port.

install(
  cargobi({ crateName: 'whiz' })
)

Checklist

• The change come with new or modified tests
• Hard-to-understand functions have explanatory comments
• End-user documentation is updated to reflect the change