Add Windows ARM64 Build configuration

[tonybaloney]

This PR adds a build configuration for Windows on ARM64 using the new GitHub runner.

[tonybaloney]

thread 'main' panicked at C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\bindgen-0.69.5\lib.rs:622:31:
    Unable to find libclang: "couldn't find any valid shared libraries matching: ['clang.dll', 'libclang.dll'], set the `LIBCLANG_PATH` environment variable to a path where one of these files can be found (invalid: [(C:\\Program Files\\LLVM\\bin\\libclang.dll: invalid DLL (x86-64))])"
    stack backtrace:
    note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
  nox > Command cargo run --manifest-path=pyo3-ffi-check/Cargo.toml failed with exit code 101

[tonybaloney]

Related actions/runner-images#3316

[davidhewitt]

Ungh; presumably these runners also have an x86_64 install of llvm. We presumably need to figure out how to set up an arm install.

Maybe https://github.com/marketplace/actions/install-llvm-and-clang ?

[davidhewitt]

Looks promising!

[davidhewitt]

This looks like it succeeded! Windows 3.14 issue is pre-existing and needs investigation when I can get to a PC.

As this is a CI-only change, I'm just going to send this now.