Refactoring Keyword mapping, introducing tuples

Src/Data/Myc.Data.Tuple.pas

@@ -0,0 +1,17 @@
+unit Myc.Data.Tuple;
+
+interface
+
+type
+    ITuple<T> = interface
+        {$region 'private'}
+        function GetItems(Idx: Integer): T;
+        function GetCount: Integer;
+        {$endregion}
+        property Items[Idx: Integer]: T read GetItems; default;
+        property Count: Integer read GetCount;
+    end;
+
+implementation
+
+end.