Grid import using opm-common improvements (#11438)

* Update opm-common EGRID reader to support LGRs, NNCs, dual porosity, unit system info and time step filters
* Rearrange well reading code into separate class
* Update resdata library to not require an ecl_grid when reading well information. Only lgr names are needed, allows reused by opm_common reader

ApplicationLibCode/FileInterface/RifReaderInterface.h

@@ -56,7 +56,7 @@ public:
     bool          isImportOfCompleteMswDataEnabled();
     bool          isNNCsEnabled();
     bool          includeInactiveCellsInFaultGeometry();
-    bool          isSkipWellData();
+    bool          loadWellDataEnabled();
     const QString faultIncludeFileAbsolutePathPrefix();
 
     virtual bool open( const QString& fileName, RigEclipseCaseData* eclipseCase ) = 0;