668dd146f6
This patch adds different kind of shapes/styles for the line extremes while using the annotation line tool. Current Styles: (following @mendio mockup) - Arrow (closed arrow) - Open Arrow - Segment - Square For future it would be great to have icons, it would be more intuitive (and less space) with previews of what each end / start of line does, like the google slides one as reference: {F8511116} Reviewed By: #grease_pencil, antoniov, HooglyBoogly Differential Revision: https://developer.blender.org/D7608