Add multi-page articles to Hinode

[myrthos]

Is your feature request related to a problem? Please describe.
Some articles, like projects, can become very lengthy. For that reason it would be good to split the article up over multiple pages, as it is better readable. It would obviously need navigation for those pages. It is also something you can find on other sites, especially for reviews (like on tweakers.net for example).

Describe the solution you'd like
I've implemented this for my site, so I don't need a solution. I just think it would be a nice addition to the Hinode theme. My solution is probably just one of the possibilities and potentially not even the best, but I just mention the link as an example. I also have a placeholder multi-page project here that uses my solution.
The pagination part in the article is not something I propose to implement in Hinode. I just made that as a learning exercise, for Hugo and Bootstrap and preferring a slightly different styling of the buttons.