Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/CMakeLists.txt

@@ -0,0 +1,19 @@
+#
+# $Id$
+# $HeadURL$
+# $Author$
+# Created by Mike Wille, SLSE, 2017-11-15
+#
+
+#IF (NOT BUILD_RPM)   <= Build always, even on release, started via hashed phrase
+  ADD_SUBDIRECTORY(Gui)
+#ENDIF()
+
+#
+# Gui Plugin Interface
+#
+ADD_INTERFACE_LIBRARY(DevGuiPluginInterface
+  ${CMAKE_CURRENT_SOURCE_DIR}/dev_gui_plugin_interface.h
+  ${CMAKE_CURRENT_SOURCE_DIR}/..
+  GuiPluginInterface
+)