Add equivalentProperties axioms linking to CommonCoreOntologies

[cmungall]

See https://github.com/CommonCoreOntology/CommonCoreOntologies

Note that they are using the 2005 set of relations with the old URIs
https://github.com/CommonCoreOntology/CommonCoreOntologies/blob/master/BFO%20Version/ro.owl
I will alert them these are no longer supported

This has a lot of overlap with current RO:
https://github.com/CommonCoreOntology/CommonCoreOntologies/blob/master/ExtendedRelationOntology.ttl

We should make EP axioms, and coordinate with them. I will post on their tracker

Out of scope for this ticket, but overlap with other OBOs, e.g. PATO and https://github.com/CommonCoreOntology/CommonCoreOntologies/blob/master/QualityOntology.ttl

[nlharris]

Is this still needed?