Implement functional variant of the styled macro #42
Description
I think it would be rather nice to be able to take a "styled representation" (e.g. {magenta:hey}) and transform it to an AnnotatedString as the styled"" macro does, but with a function.
This would require a major refactor to stylemacro.jl, and I think we'd want to chop out the code-evaluation related functionality from the functional form, but I think it would be worth having.