Additional refactoring for POR-Bar result handling

* Always use element-nodal for POR calculations
* Add RigFemAddressDefines
Add special handling for "POR-Bar" result, always use element_nodal

* 9362 Show unit text "sg" when normalized by hydrostatic pressure

ApplicationLibCode/GeoMech/GeoMechDataModel/RigFemAddressDefines.h

@@ -0,0 +1,33 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2023- Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include <string>
+
+class RigFemResultAddress;
+
+namespace RigFemAddressDefines
+{
+const std::string porBar();
+
+RigFemResultAddress getResultLookupAddress( const RigFemResultAddress& sourceAddress );
+RigFemResultAddress elementNodalPorBarAddress();
+RigFemResultAddress nodalPorBarAddress();
+
+}; // namespace RigFemAddressDefines