Vision Overlay and/or ROI line styles

[nzamora]

Overlay drawings are super useful for highlighting regions of images, but sometimes just a solid line is not enough. I'd like to be able to change overlay line types between Solid and a dashed or dotted line. Color isn't always enough to discern between different overlays and I think line styles would help with that. I've considered how to do it myself, but it seems like it would probably take much longer to compute segmented overlays than something built-in.