Add Windows ARM64 support to CI

[chinazhangchao]

Hi @letmaik , I'm from Microsoft and recently I'm working on improving Python ecosystem support for Windows on Arm.
So I updates the CI workflows to add support for Windows ARM64 builds and tests. Could you please help to review? Thanks.

Test Results:

https://github.com/chinazhangchao/rawpy/actions/runs/32688967592

Key changes include:

Windows ARM64 Support:

• Adds ARM64 (arm64) as a supported architecture in the build and test matrices in .github/workflows/ci.yml, enabling CI for Windows ARM64 across Python 3.11–3.14. [1] [2] [3]
• Updates documentation in DEVELOP.md to reflect that Windows ARM64 wheels are now built (Python 3.11+).

Build and Test Script Enhancements:

• Refactors .github/scripts/build-windows.ps1 and .github/scripts/test-sdist-windows.ps1 to support arm64 by:
  • Accepting an Architecture parameter,
  • Dynamically setting Visual Studio architecture, vcpkg triplet, and Python platform,
  • Validating the Python architecture, and
  • Using the correct vcpkg branch and triplet for each architecture. [1] [2] [3] [4] [5] [6] [7]
• Updates .github/scripts/test-windows.ps1 to:
  • Support ARM64 in the test matrix,
  • Validate both Python version and architecture,
  • Ensure the correct wheel is installed for the specific architecture. [1] [2] [3]

Environment and Build Robustness:

• Passes vcpkg toolchain and triplet information from the environment to the CMake build in setup.py, ensuring consistent builds across all Windows architectures. [1] [2]
• Updates the vcpkg branch used for dependency installation to a newer version for all builds. [1] [2]

CI Workflow Improvements:

• Ensures the correct Python architecture is set up in the CI workflow by passing the architecture parameter to actions/setup-python. [1] [2]

These changes collectively enable full CI coverage and wheel distribution for Windows ARM64, modernize the build process, and improve reliability for all Windows builds.

[letmaik]

This condition looks a bit odd, can you double check?

[chinazhangchao]

Good catch! Fixed.

[letmaik]

Thanks a lot for the contribution, much appreciated.