Support sh:ignoredProperties

[philbarker]

When a shape is closed it would be useful to suppor sh:ignoredProperties: a list of properties that ignored: i.e. allowed in the shape but have no associated TAP propertyContraint / sh:PropertyShape.

Heading in shapes csv would ignoreProps, which would then be a key in the python AP shapes dict.

[philbarker]

Test example is the Person shape in the example provided in the shacl spec:

ex:ClosedShapeExampleShape
	a sh:NodeShape ;
	sh:targetNode ex:Alice, ex:Bob ;
	sh:closed true ;
	sh:ignoredProperties (rdf:type) ;
...