* Geometry Tools : Add convenience functions for polygon area
* #7232 Result Divided by Area: Add cell face result and show in GUI
Native support for flow rate is given by mass rate (mass per time) over a cell face. Add a derived result that takes flow rate divided by cell face area to get velocity (distance per time).
Add support for this concept on relevant native results, and indicate this result type in UI using a "/A" postfix
* Speed up divided-by-area calculations by using openmp
* Some refactoring of result data access.
* Make sure NNC data is scaled correctly in vector flow viz.
Co-authored-by: jonjenssen <jon@soundsoft.no>
