need "region" field in top-level JSON-LD

[jmckenna]

• knowing which region(s) is associated with each record, is critical for any search/querying of the ODIS graph, as well as producing any summary for each region
• a top-level field in the JSON-LD for region is therefore required
• notes / challenges / thoughts:
  • multiple regions can be associated with each entry
  • global repositories may have local regional data, yet lack any 'region' definition
  • this requirement should also be added into the documentation/book, so all partners tackle this themselves early on
  • especially as adding a region value through the ODIS-Arch graph ourselves (for existing entries) could be problematic
  • the Dashboard could give a status on whether a node is defining a "region" or not

[jmckenna]

We should also define/document the possible values for this region keyword. Here are some notes from the previous discussion related to regions:

• possibly use IHO sea areas from Marine Regions : https://www.marineregions.org/
• Ocean Decade list:
  • Southern Ocean
  • Arctic Ocean
  • Indian Ocean
  • North Atlantic Ocean
  • North Pacific Ocean
  • South Atlantic Ocean
  • South Pacific Ocean
• UN GeoScheme https://en.wikipedia.org/wiki/United_Nations_geoscheme

[pbuttigieg]

Xref https://github.com/iodepo/oih-ui/issues/21