DatamodelConverter is missing support for some entity types

[wetneb]

This should also have MediaInfoIdValue and others (lexeme, form, sense):

Wikidata-Toolkit/wdtk-datamodel/src/main/java/org/wikidata/wdtk/datamodel/helpers/DatamodelConverter.java

Lines 418 to 427 in 6754af6

	public Value visit(EntityIdValue value) {
	if (value instanceof ItemIdValue) {
	return copy((ItemIdValue) value);
	} else if (value instanceof PropertyIdValue) {
	return copy((PropertyIdValue) value);
	} else {
	throw new UnsupportedOperationException(
	"Cannot convert entity id value: " + value.getClass());
	}
	}