[Feature request]: Add canvas programing system (Add excel/formular system)

[CodeDoctorDE]

Is your feature request related to a problem? Please describe

We have implemented Word, OneNote and PowerPoint in Butterfly, now we need Excel!

Describe your feature request!

Introducing the canvas

This element allows you to program functions using lua and display them in a canvas. You can run 1+1 to show 2 on the canvas, but you are not limited to this. Drawing shapes, strokes and more are also possible. The canvas element works just like an invisible rectangle which you previously define, but when running it, it can display everything in the bounds. (Todo: Should it run when loading the document or should there be a "run" button? How to define inputs?)

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