Add DataCite 4.5 Support

[tmorrell]

This PR adds DataCite 4.5 support. I'll leave this PR open for comments until at least 2024-07-11.

This is a major set of improvements, primarily contributed by @edager. @mfenner helped with some initial jsonschema work and reviews. This will close https://github.com/inveniosoftware/datacite/issues/81 https://github.com/inveniosoftware/datacite/issues/86 https://github.com/inveniosoftware/datacite/issues/80 and https://github.com/inveniosoftware/datacite/issues/76

Changes in version 4.5 include

• Switches to jsonschema 2019-09 and adds more complete validation to catch mistyped elements
• Switches publisher from a string to an object. This means you will need to change publisher to be structured like "publisher": {"name": "Invenio Software"} when you use version 4.5. This change is needed to support the addition of publisher identifiers.
• Removes the identifiers field and added doi, prefix, and suffix fields. These fields are clearer, and DataCite appears to be moving away from the combined identifiers field. doi and prefix are not a required fields since you may or may not have them depending on your workflow.
• Adds new relatedItem elements for publication metadata
• Switches geolocation point values to numbers. This is to enable validation and is consistent with GeoJson and InvenioRDM. It is different from the DataCite REST API which uses strings, and submitted numbers will be turned into strings by DataCite.
• Reorganizes geolocationPolygon to how DataCite is currently rendering this metadata
• Adds support for the new resourceTypeGeneral and relationType values
• General jsonschema organization improvements

[edager]

@tmorrell Thanks for the changes, thought I would have had the time, but I have been quite busy the last couple of days