Railgun - Oculus Quest 2 Rifle Stock

This is my take on the various "tube" grips for the quest 2 (protube, noobtube etc.). I wanted to do something that had two detachable grips to allow using the bolt action rifles in Pavlov or Contractors. __Note:__ This is a simplified updated version that is mostly compatible with the old version (with a couple of minor exceptions described below in a section called "Migration from v1" ### Design Goals * Grips should attach securely but be easy to detach/re-attach while in VR. * Grips should be movable along a rail to support shorter or longer in-game weapons. * Grips should automatically locate onto into rail. * Design should be easily extended or modified. To achieve these goals there are two main components; a rail and a grip attachment. These two parts lock together in two ways to achieve the attach/detach mechanics: 1. Strong magnets in grips and rail to snap grips into place. 2. Teeth that mechanically locks the parts together when pulled towards the body, bu