Convenient interfaces for starting and stopping Replay recording in VR

[dmurfet]

Using the 2D GUI to start and stop replays means there is the tell-tale motion of my hand doing so at the beginning and end of every clip. We need start / end offsets for the replay as well as the audio, and easily controller access to starting / stopping replays (trick is, they shouldn't be triggered accidentally). Maybe it can be in the radial menu with the Chalk etc, i.e. it's a tool.