Declare new ado:LivePerformanceWork properties

[fjjulien]

@GaryMan1968 and I defined an application profile for the new ado:LivePerformanceWork class. This application profile includes 10 new properties that should be declared in the Artsdata Ontology:

• ado:title
• ado:alternativeTitle
• ado:usesExpressionOf
• ado:follows
• ado:isDerivativeOf
• ado:hasPart
• ado:inspiredBy
• ado:accompanies
• ado:workPerformed
• ado:contributor

These properties are mapped to LRMoo, DCMI Terms, Wikidata, Schema.org and Datascène.

The triples for these properties are defined in this spreadsheet tab (A1:J11).

[fjjulien]

@saumier @GaryMan1968

I prepared a PR to declare the new classes to artsdata-ontology.ttl. The following principles were used to define the property:

1. We used schema:CreativeWork as the domain rather than ado:LivePerformanceWork. We deemed this would make the Artsdata ontology more easily expandable to include other kinds of works.
2. Mappings to other properties were made almost exclusively with owl:equivalentClass, with one exception:
   • ado:workPerformed: We used rdfs:subPropertyOf schema:workPerformed to allow us to easily query both properties.

[fjjulien]

I forgot to edit the version number and the modified date in my first PR. Here's the second one: #288

[fjjulien]

I submitted a new commit.