feat(ci): add MSIX packaging to release workflow #17
Description
Summary
Add MSIX packaging support to the release workflow to enable:
- Windows Store distribution
- Easier installation via MSIX installer
Requirements
- Configure project for MSIX packaging (Package.appxmanifest)
- Code signing certificate for MSIX
- Update release workflow with MSIX build steps
- Optionally enable Microsoft Store submission
Related
This was temporarily removed in the fix to simplify the release workflow for portable-only builds.