[Wishlist] Include web rendering code as `benepar.render()` for Jupyter Notebooks

[chrish42]

Hi. Thanks for writing benepar. The web rendering demo is super useful for visualizing sentence structure. It'd be lovely if it was made available as something like benepar.render() (inspired from spaCy) for use within Jupyter notebooks, etc. I expect most of the code on the website that does this rendering could be reused as is, too.