Add support for translating Data Property and Object Properties into CodeSystem Properties.

[geoffpettengill]

Add flags to determine if Data Properties and Object Properties should be extracted from the OWL source into concept Properties

Add flag to support adding filters corresponding to these properties.

[alecdorenkamp]

See https://github.com/aehrc/fhir-owl/tree/issue/9, which is a WIP. We right now this handles data properties and simple Object Properties like

<rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="&SDO;hasUnit"/>
                <owl:someValuesFrom rdf:resource="&UnitsOntology;event_count"/>
            </owl:Restriction>
 </rdfs:subClassOf>

but before merging we would want to update this to handle complex object properties like

<rdfs:subClassOf>
          <owl:Restriction>
              <owl:onProperty rdf:resource="&SDO;numberOf"/>
              <owl:someValuesFrom>
                  <owl:Class>
                      <owl:intersectionOf rdf:parseType="Collection">
                          <rdf:Description rdf:about="&SDO;SleepApneaFinding"/>
                          <owl:Restriction>
                              <owl:onProperty rdf:resource="http://purl.org/cpr/includes"/>
                              <owl:someValuesFrom rdf:resource="&SDO;HemoglobinOxygenDesaturation_2_percent_or_more"/>
                          </owl:Restriction>
                      </owl:intersectionOf>
                  </owl:Class>
              </owl:someValuesFrom>
          </owl:Restriction>
      </rdfs:subClassOf>