git ontologies/ directory has too much stuff

[ramorrismorris]

presently ontologies/ holds entirely things that we use in treatment.owl but we do not maintain. I propose:

1. (Terry) Remove them all and consider adding a text file "dependencies.txt" with a list of the dependencies
2. (Terry) Move treatment,owl into ontologies/ and in future put only things we maintain there.
3. (Bob) Put an appropriate DwC owl model in ontologies/

[github-actions]

This issue is stale because it has been open for 90 days with no activity.

[retog]

I'd suggest adding an all-ontologies.ttl defining an ontology with URI https://vocab.plazi.org/all-ontologies/ that owl:imports all ontologies that we use.