Complete Qt6 migration: full clean build green across groups G1-G12 incl. runtime plugin set

new_docker_build.sh gains Group 12 (212 GUI/Data plugins); fixes LtsUtilsGuiDds visibility (LTO-stripped exports), LtsProjectionWorkstation unity name shadow, 6 unity-off dirs (dup file-scope statics, ddsftc INTERFACE sources) and reconfigures BUILD_FILTERMANAGEMENT/BUILD_PLUGINS_SERVICEMONITOR=ON

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/MapObjects/map_object_attributes.h

@@ -0,0 +1,35 @@
+/**
+  * @RDE_HEADER@
+  * Interface of DangerArea
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include "abstract_single_point_map_object.h"
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+/**
+ * @brief
+ */
+class MapObjectAttributes : public virtual AbstractSinglePointMapObject
+{
+
+public:
+  /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   * Don't use "= default" because of bug in VS2015 JT 2016/11/7
+   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+  MapObjectAttributes() : AbstractSinglePointMapObject() {;}  ///< Contructor
+
+  virtual ~MapObjectAttributes() = default;  ///< Destructor
+
+  virtual QVariantMap attributes() const = 0;
+  virtual void setAttributes(const QVariantMap &attributes) = 0;
+};
+
+} // namespace SituationMap