Add new monadic operator sort for binding user-defined literals

include/ifc/operators.hxx

@@ -139,6 +139,7 @@ namespace ifc {
         MsvcConfusedSubstitution,                           // Represents a template parameter substitution 'P -> expr' where 'expr' could be a type or a non-type argument replacement.
         MsvcConfusedAggregateReturn,                        // Decorates a return statement which returns an aggregate class type with a user-defined destructor.
         MsvcConfusedVftblPointerInit,                       // An initialization of a derived class's vftbl pointer.
+        MsvcConfusedSuffix,                                 // The expression representing both a literal string or constant and the user-defined literal function to call.
 
         Last
     };