Ref T701, IAircraftModelSetProvider 1st version

* added to matcher
* and simulator context
* in facade changed init order, as we need getCContextOwnAircraft() / getCContextSimulator()

Remark: Need 2 contexts is not ideal, but accepted for the moment

src/blackmisc/simulation/aircraftmodelsetprovider.cpp

@@ -0,0 +1,32 @@
+/* Copyright (C) 2019
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
+ * or distributed except according to the terms contained in the LICENSE file.
+ */
+
+#include "aircraftmodelsetprovider.h"
+
+namespace BlackMisc
+{
+    namespace Simulation
+    {
+        // pin vtables to this file
+        void CAircraftModelSetAware::anchor()
+        { }
+
+        CAircraftModelList CAircraftModelSetAware::getModelSet() const
+        {
+            if (!this->hasProvider()) { return CAircraftModelList(); }
+            return this->provider()->getModelSet();
+        }
+
+        int CAircraftModelSetAware::getModelSetCount() const
+        {
+            if (!this->hasProvider()) { return -1; }
+            return this->provider()->getModelSetCount();
+        }
+
+    } // ns
+} // ns