Add macOS Apple Silicon build matrix entry

[nirinarakotobe]

Summary

• Add a macOS Apple Silicon entry to the existing build matrix in .github/workflows/build.yml.
• Use GitHub's arm64 macOS runner with CMAKE_OSX_ARCHITECTURES=arm64.
• Keep the existing macOS libssh2 configuration by using USE_SSH:STRING=localbuild.
• Include both Intel and Apple Silicon macOS packages in the release upload file list.

Validation

• Parsed .github/workflows/build.yml locally with Ruby YAML.
• Locally corrected the Apple Silicon configure command after confirming USE_SSH:STRING=localbuild is required to avoid the libssh2 resolution error.
• GitHub Actions previously passed for the macOS arm64 matrix entry.

Notes

• This replaces the earlier standalone Apple Silicon workflow approach and keeps macOS packaging inside the existing workflow.

[Murmele]

Thanks you! Would it possible to integrate into the build.yml file. Did you try if the resulting macos package is running fine?

[nirinarakotobe]

I have not fully tested the complete workflow locally yet, but the macOS build itself is working properly. I also created a fork to integrate the macOS-specific style.

And yes, I agree it should be integrated into the existing .github/workflows/build.yml instead of adding a separate workflow. I have updated the PR accordingly: the standalone workflow has been removed, and a macos-arm64 entry has been added to the existing build matrix, using GitHub’s macos-15 arm64 runner and CMAKE_OSX_ARCHITECTURES=arm64.

[Murmele]

If you wanna have it in the release you have to add it here

[Murmele]

The resulting macos build is not working