McuSupport: track if kit dependencies go missing

Task-number: QTCREATORBUG-25262
Change-Id: Icf95a418216ae94fcfc76784a10eb23e403f3d52
Reviewed-by: Erik Verbruggen <erik.verbruggen@me.com>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mcusupport/mcusupportplugin.cpp

@@ -59,6 +59,7 @@ public:
         {Constants::RUNCONFIGURATION}
     };
     McuSupportOptionsPage optionsPage;
+    McuDependenciesKitAspect environmentPathsKitAspect;
 };
 
 static McuSupportPluginPrivate *dd = nullptr;