Add column for DataCite client id (e.g. gdcc.syr-qdr)

In the spreadsheet we already track doi_authority, which is 10.5064, for example, for https://data.qdr.syr.edu

We can discover that the client id is "gdcc.syr-qdr" for that example, like this (original tip):

curl -s https://api.datacite.org/prefixes/10.5064 | jq -r '.data.relationships.clients.data[0].id'

Once we have the id (which I think we should probably put in the spreadsheet directly, rather than calling the DataCite API above in real time), we can link to https://metadata.datacite.org/gdcc.syr-qdr for example, from the map. It looks like this:

Hat tip to @adam3smith who put this new metadata quality dashboard ( https://datacite.org/blog/visualize-and-monitor-datacite-metadata-quality-with-new-dashboards/ ) on my radar at https://groups.google.com/g/dataverse-community/c/QgABHnstzXA/m/-2ZpsE5iBAAJ ! ❤️

Use the linked spreadsheet and the existing map data as the starting points; the issue shows the DataCite API query and the metadata URL pattern to follow. Add a DataCite client ID column, populate the relevant value, and make the map link to the corresponding metadata.datacite.org page.