[PROJ] DOI for PROJ through Zenodo

[Even Rouault]

Hi,

See https://github.com/OSGeo/PROJ/pull/3019 for more details. I've taken 
the top committers according to github. If folks want to be removed or 
added or have their information modified (I've looked orcid identifiers 
quickly so I may have missed folks), please add comments in the ticket, 
or better create a pull request  to amend it

Even

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