Check for known model so mapping component can check without loaded model set

src/blackcore/context/contextsimulator.h

@@ -187,6 +187,9 @@ namespace BlackCore
             //! Model set completer string
             virtual QStringList getModelSetCompleterStrings(bool sorted) const = 0;
 
+            //! Known model?
+            virtual bool isKnownModel(const QString &modelstring) const = 0;
+
             //! Set time synchronization between simulator and user's computer time
             //! \remarks not all drivers implement this, e.g. if it is an intrinsic simulator feature
             virtual bool setTimeSynchronization(bool enable, const BlackMisc::PhysicalQuantities::CTime &offset) = 0;