Include overlaps relationship in interpro ingest

[cmungall]

https://www.ebi.ac.uk/interpro/entry/InterPro/IPR036069/

• DUF34/NIF3 (IPR002678)
• DUF34/NIF3, bacteria (IPR017221)
• DUF34/NIF3, animal (IPR017222)

the .obo has no relationship between these:

[Term] id: interpro:IPR036069 name: DUF34/NIF3 superfamily property_value: type "Homologous_superfamily" xsd:string

I would recommend something from the RO similarity hierarchy here (not RO:overlaps, which is for physical or temporal overlaps)