[Tentative] PNG export #2
Description
Button to export the current tree view as a PNG
The SVG is already in the DOM
SVG > canvas > blob > download.
See:
drawImage- https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage
toBlob() - https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob