Generic profile names don't specify grip button presence

[jacobcdewitt]

In src/profiles, there are generic names thumbstick-controller, touchpad-controller, and touchpad-thumbstick-controller. However, with those names and the functionality that their profiles.json files define, it's still ambiguous whether or not the controllers have a grip button (or if it's just a placeholder button required by the xr-standard mapping).

For example, ideally there would be separate profiles for:
touchpad-controller (grip button slot is placeholder required by xr-standard mapping)
grip-touchpad-controller (grip button is actually exposed)

[jacobcdewitt]

Duplicate of #70