Functionality for getting bounding box of text from satori

[digitaltembo]

Feature Request

Description

I would like to render a dynamic SVG in two different ways, depending on whether or not the text fits within a single line. It looks like this functionality is part of the underlying opentypes.js library, but it would be nice if there was an exported function that exposes Font.getAdvancedWidth or Path.getBoundingBox from the font objects that Satori is already loading.