overlay: Switch to standing universe, which is "close enough"

[kitlith]

Driver and Feeder now use a "static standing" universe, which should be the same as standing universe except it ignores playspace changing.

Ideally, we'd implement that here too, but this is better than leaving it the way it is. When playspace movement happens, I expect the skeleton to move relative to the player.

For future reference, this is how I handled it in feeder app: https://github.com/SlimeVR/SlimeVR-Feeder-App/blob/master/src/main.cpp#L660-L700

[TheButlah]

Looks like there's some formatting errors, can you run rustfmt?

[kitlith]

Looks like there's some formatting errors, can you run rustfmt?

Are you referring to the lint errors in the networking code I didn't touch?

[TheButlah]

The auto formatter errors yes. But like you said you didn't introduce those, so merging.