Add a setting to adjust the size of the view based rotation ring.

[LukeP0WERS]

The rotation arcs for the gizmo can very noticeably stretch and warp outside the outer rotation ring when the projection matrix is created with a FOV greater than 45 degrees (the screenshot has a FOV of 90 and was cropped from the corner of the screen where the effect is most noticeable). I'm pretty sure this can't be fixed since it's just a biproduct of the outer ring not being affected by projection, and if it was it wouldn't be a circle. It would be nice if there was a setting to make the outer ring bigger to offset this effect though.

[LukeP0WERS]

It would also be useful to be able to adjust the other inner circle.