Sketchy

Primitive, data-oriented MSPaint imitation.

• Misses canvas resizing, zoom therefore isn't working as expected
• No need for side-effects as browser handles saving .json file directly on newer browsers
• Undo logic added, but haven't added keyboard shortcut, tho looked at react-hotkeys
• Static types are messy, my TS is a bit rusty
• Could improve code quality by exporting constants and local-sensitive strings