[feature] Shape recognition

[SimonSimCity]

I'd be interested in shape recognition. Found this - maybe there's something in JavaScript for SVG as well ... 🤗

The idea was taken by https://helpx.adobe.com/illustrator/using/tool-techniques/shaper-tool.html

[steveruizok]

This one is out of scope for this project—we're really just about the ink itself. I'd love to see a project like this though!