Introduce mechanism or option to allow for mapping of side effect free Teiid procedures to ODATA functions, and actions if procedure has side effects

This is a follow up regarding https://issues.jboss.org/browse/TEIID-5725

As discussed there, Teiid currently does not map virtual procedures and functions to odata functions and procedures according to the notion of "side effect free"

Please introduce a mechanism to allow for a mapping according to adequate odata semantics.