[feature][XPlane] Set own aircraft model string when own aircraft changes.

Summary:
Refactored parts of CAircraftModelLoaderXPlane::parseFlyableAirplanes into static method extractAcfProperties that can be called by xswiftbus.

Used extractAcfProperties in xswiftbus to provide the model string to the driver. Implemented CSimulatorXPlane::ps_emitOwnAircraftModelChanged.

Implements T74.

Reviewers: rwinklmeier

Reviewed By: rwinklmeier

Subscribers: jenkins

Tags: #swift_pilot_client

Differential Revision: https://dev.swift-project.org/D23

src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.h

@@ -52,6 +52,9 @@ namespace BlackMisc
                 virtual bool isLoadingFinished() const override;
                 //! @}
 
+                //! Extract from an acf file (flyable plane) the properties needed to generate model string.
+                static BlackMisc::Simulation::CAircraftModel extractAcfProperties(const QString &filePath, const QFileInfo &fileInfo);
+
             public slots:
                 //! Parsed or injected models
                 void updateInstalledModels(const BlackMisc::Simulation::CAircraftModelList &models);