Adds a simple "Paint" like program to the atto editor. Features include simple shape tools, drawing, typing, colors, undo/redo. Utilizes the open source "miniPaint" image editor. https://github.com/viliusle/miniPaint
Create the lib/editor/atto/plugins/sketch folder and place all files there. Run through standard Moodle update/install process.
Set cursor in the editor and click the sketch icon. The editor will open full screen. Use a stylus, finger or mouse to create/edit image. Click "Insert Sketch" to add to editor.