Invert and add border to entire screenshot.

[jieming7]

Feature Description

Many programmers have their interface in dark mode. Currently after taking a screenshot of a specific area, we need to press invert colour and re-draw the area. Then to add borders, click rectangle and redraw the same area for the third time. Please allow for a single-button to invert the entire screenshot and add borders to it without having to go over the same area 3 times.