Added setCapacity function to presize storage

src/dynamicMesh/polyTopoChange/polyTopoChange/polyTopoChange.H

@@ -472,6 +472,15 @@ public:
                 const labelList& cellZoneMap
             );
 
+            //- Explicitly pre-size the dynamic storage for expected mesh
+            //  size for if construct-without-mesh
+            void setCapacity
+            (
+                const label nPoints,
+                const label nFaces,
+                const label nCells
+            );
+
             //- Move all points. Incompatible with other topology changes.
             void movePoints(const pointField& newPoints);