How to help add new fonts

[EHLOVader]

I didn't see a contributing in the repo and have a request for new fonts myself.

Looking through there are a lot of fonts though, which may be useful to add. #46, #52, #56, #58, #60, #22 and #37 (although that may be less useful here IMHO)

I didn't know how you manage the fonts, I see them being mirrored here, but were there guidelines for contributing, or advice for how these can be added as a PR not just a request?