Example — Hello DemoKit

The smallest complete VersoDemo: a clear-screen background and one fading
SDF-text title. A good starting point for a new demo.

Run:  ./VersoDemo --input data/example-hello.json

CODE:  VersoDemo examples
MUSIC: test.mp3 (placeholder)

If you're using Windows and missing DLLs then install the x64 version of
Microsoft Visual C++ Redistributable for Visual Studio 2019.
