develop semantic annotation helper functions

[laijasmine]

To make supporting EML2.2.0 easier we should consider developing some helper functions for ontologies like OBOE through bioportal.

Potentially using BioPortal's Term Search API endpoint (documented at http://data.bioontology.org/documentation#nav_search) which can be used to find the most likely term(s) given a free text input (i.e., an attributeName).

• [ ] a function that gets the propertyURI when given a label?
• [ ] a similar function that gets the valueURI