Use with other trackers

[BeigeAnimal]

Is it possible for you to add support with using other SteamVR trackers (Vive trackers, Thundra, etc) as a position reference for slimeVR?
An example is I'm reusing my old Vive wands as flashed trackers, but I want to use SlimeVR for feet, would it be possible for you to add support for SlimeVR to use my trackers as a positional reference for the feet trackers. I'm using the vive wands as knee trackers for context.

[Erimelowo]

duplicate of #142