refs #332 send slew mode position packet instead of the full one

This bypasses the physics engine inside FS9

src/plugins/simulator/fs9/blacksimplugin_freefunctions.h

@@ -55,6 +55,10 @@ namespace BlackSimPlugin
                                  const BlackMisc::Aviation::CAircraftSituation &newSituation,
                                  double updateInterval);
 
+        //! Convert an aircraft situation to a FS9 struct
+        MPPositionSlewMode aircraftSituationtoFS9(const BlackMisc::Aviation::CAircraftSituation &situation);
+
+
         HRESULT printDirectPlayError(HRESULT error);