Fix Zenodo and add CFF validator pre-commit hook

[MattF-NSIDC]

https://github.com/citation-file-format/cffconvert

Zenodo DOI issuance has been failing since 0.6.1. Let's use a validator to help us find the issue.

[MattF-NSIDC]

Zenodo migrated to InvenioRDM and that probably brought schema changes. I fixed this in another project like so:

nsidc/agu2023-qgreenland-cryocloud@7301ab9

This project doesn't have the typo, but it will need the authors and title key for every references item.

[MattF-NSIDC]

Also, to represent stuff that CITATION.cff isn't good at, IMO we should switch to CodeMeta. We can generate a CITATION.cff file from that programmatically.

[MattF-NSIDC]

I figured out what was causing Zenodo to get upset and give us the silent treatment: zenodo/zenodo#2515

license may no longer be an array. There are legitimate reasons to multi-license, so I'm surprised we're the first to complain!!! We don't even multi-license, I just set it as an array in case we wanted to extend it later.