Add human reference genome to prepared databases

[dportik]

Hi Titus et al, Given the recent fiasco related to mapping reads to microbial databases without human references (links at bottom), it might be a good time to create a small human genome database for use with sourmash. A standalone database on the database page would be ideal, so that researchers can include with the other databases of interest.

Thanks for considering!

social media discussion: https://twitter.com/StevenSalzberg1/status/1686350449069244416 pre-print: https://doi.org/10.1101/2023.07.28.550993