Issue 571: cardinality constraints for typed properties

In the 51st CIDOC CRM & 44th FRBRoo SIG meeting, upon discussing issue 532, the SIG decided to start a new issue, where to discuss the section that cardinalities of typed properties (.1/.2) should appear in the CIDOC CRM document. If cardinalities for typed properties are not to be defined on a one-by-one basis, this calls for drafting a text settling them in the introduction section. Otherwise, a template is needed for adding cardinality constraints to the definitions of typed properties, for the properties that have them.