[PCS/LIE] add hydraulic properties in FractureProperty

ProcessLib/LIE/Common/FractureProperty.h

@@ -35,6 +35,8 @@ struct FractureProperty
     Eigen::MatrixXd R;
     /// Initial aperture
     ProcessLib::Parameter<double> const* aperture0 = nullptr;
+    ProcessLib::Parameter<double> const* specific_storage = nullptr;
+    ProcessLib::Parameter<double> const* biot_coefficient = nullptr;
 };
 
 /// configure fracture property based on a fracture element assuming