#3089 Non-Darcy longitudinal : Add support for longitudinal fractures

- move non-darcy data from template to fracture, as this data is now depending of fracutre
- compute weighted average of stimplan width and conductivity based on fracture perforation length
- use referringPtrFields() to find fractures using this fracture template

ApplicationCode/ReservoirDataModel/Completions/RigWellPathStimplanIntersector.h

@@ -41,6 +41,11 @@ public:
         double hlength; 
         double vlength; 
         int endpointCount;
+
+        double computeLength() const
+        {
+            return cvf::Math::sqrt(hlength * hlength + vlength * vlength);
+        }
     };
 
     RigWellPathStimplanIntersector(const RigWellPath* wellpathGeom, const RimFracture* rimFracture);