Fix hotbarRight not being implemented and improve Oculus Touch keybindings

[Kopymatic]

This is similar to #28 , however after testing it, #28 didnt work as intended. Due to a typo in VanillaGameplayActionSet.java, acitonSet.hotbarRight was never checked. This PR fixes that, as well as offering the same bindings as #28 (minus the menu button, which did not work)

The bindings changed are as follows: Left thumbstick pressed is now sprint Right thumbstick pressed is now crouch Grips on either controller now move the selected hotbar slot in the respective direction.

I playtested for about an hour with these keybinds, and they work significantly better than the existing ones.