Porting Godot Oculus Quest Beat Saber clone (Beep Saber) to the Valve Index (libsurvive)

This video shows a work in progress port of [Beep Saber](https://github.com/neospark314) to [Godot4](https://godotengine.org/article/godot-4-0-sets-sail/), played on a Valve Index with [Monado](https://monado.dev) and [libsurvive](https://github.com/cntools/libsurvive).