Add ROR to subproperty affiliation and creatorName of Creator

[jmvezic]

Since 4.1 started introducing ROR, it would be wise to add it to the Creator subproperties, especially affiliation, since that's the main goal of ROR:

ROR is focused exclusively on providing core high-quality open data and infrastructure that is specific to the affiliation use case, ...

In addition to that, it can also be added to creatorName, since the Creator property allows for nameType to be "organizational".

[ACz-UniBi]

Thank you @jmvezic for your request. The Guidelines for inst. and thematic repositories supports already affiliation and the affiliationIdentifier attribute as you can see in the example here

<datacite:affiliation affiliationIdentifier="https://ror.org/01ab23cd4">Institute of Science and Technology</datacite:affiliation>

The nameType attribute of creatorName element could also be 'Organizational'.

And example could be

<datacite:creators>
  <datacite:creator>
    <datacite:creatorName nameType="Organizational">Bielefeld University Library</datacite:creatorName>
    <datacite:affiliation affiliationIdentifier="https://ror.org/02hpadn98">Bielefeld University</datacite:affiliation>
  </datacite:creator>
</datacite:creators>

I don't think the subproperty nameIdentifier can be specified because ROR doesn't currently support a multi-level hierarchy.