Modernize TouchVisualizer

What's Changed

• Explicit window by @Patrick-Kladek in #1
• Replace NSTimer with CADisplayLink by @Patrick-Kladek in #2
• OSLog by @Patrick-Kladek in #3
• Swift Package Manager by @Patrick-Kladek in #4

New Contributors

• @Patrick-Kladek made their first contribution in #1

Full Changelog: 4.0.0...5.0.0