Add Windows support research and certificate setup documentation

Includes comprehensive research on Tauri v2 Windows distribution:
- Code signing options (Azure Trusted Signing, SSL.com)
- WebView2 runtime handling
- NSIS installer configuration
- CI/CD pipeline setup with GitHub Actions
- SmartScreen and Windows Defender considerations

Certificate setup guide covers Individual and Organization validation
paths for Azure, plus SSL.com as backup option.

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

Author: AnthonyRonning