0021014: EDF 1583 SMESH: Improvement of the Python Dump for the creation of groups

0021014: EDF 1583 SMESH: Improvement of the Python Dump for the creation of groups

   SMESH_Group* AddGroup (const SMDSAbs_ElementType theType,
                          const char*               theName,
                          int&                      theId,
                          const TopoDS_Shape&       theShape=TopoDS_Shape(),
+                         const SMESH_PredicatePtr& thePredicate=SMESH_PredicatePtr());