Feature: Scroll to line

[kettanaito]

Hi!

Really enjoying this library. Please, I encourage you to consider scrolling to line in magic code blocks. Otherwise, it gets really difficult to showcase large files on the slide.

Additionally, I propose that if you focus on a line that's out of view, it should scroll to that line automatically (might support scrolling strategies similar to .scrollIntoView()).

Thanks!

[antfu]

Would you like to help implement that? Thanks!

[kettanaito]

I would but realistically can get to this not sooner than winter :( If anyone stumbles upon this meanwhile, please dive in!