sort Cells By Num Elements
fun sortCellsByNumElements(cells: List<RectangularGridSpatialModel2D.RectangularCell2D>): List<RectangularGridSpatialModel2D.RectangularCell2D>
Returns list of the cells sorted from smallest to largest based on the number of spacial elements in the cells
Return
a new list of the sorted cells
Parameters
cells
the cells to sort