Qt6 Migration: BUILD_RTI guards und CMake fixes

- BUILD_RTI conditional compilation für RTI Connext DDS dependencies
- Namespace fixes in core_dtc.h (Core:: → DDS::Core::)
- CMakeLists.txt: BUILD_RTI option und conditional dependencies
- Handler minelayer: namespace closing mit BUILD_RTI guard
- Build erfolgreich mit BUILD_RTI=OFF validiert

Signed-off-by: Torsten Wierschin <torsten.wierschin@life-maps.com>

qt6-after/qt6-migrated-legatus/tests/CMakeLists.txt

@@ -30,6 +30,12 @@ if(BUILD_TESTING)
 
         add_executable(migration_tests ${EXISTING_SOURCES})
         
+        # Enable Qt Meta-Object Compiler for tests with Q_OBJECT
+        set_target_properties(migration_tests PROPERTIES AUTOMOC ON)
+        
+        # Exclude tests for non-existent or commented-out components
+        list(FILTER EXISTING_SOURCES EXCLUDE REGEX "test_lts_app_descriptor_editor\\.cpp")
+        
         target_compile_features(migration_tests PRIVATE cxx_std_23)
         
         target_include_directories(migration_tests PRIVATE
@@ -37,18 +43,25 @@ if(BUILD_TESTING)
             ${CMAKE_SOURCE_DIR}/include
             ${CMAKE_SOURCE_DIR}/qt6-after/qt6-migrated-legatus
             ${CMAKE_SOURCE_DIR}/qt6-after/qt6-migrated-legatus/include
+            ${CMAKE_SOURCE_DIR}/qt6-after/qt6-migrated-legatus/DDS
             ${CMAKE_BINARY_DIR}/Lts/Common
+            ${CMAKE_BINARY_DIR}/Lts/Common/CodeGen
+            ${CMAKE_BINARY_DIR}/Lts/Common/LtsTimeline
         )
         
-        # Link against Qt6 components
+        # Link against Qt6 components and LtsTimelineClassic (provides export header)
         target_link_libraries(migration_tests PRIVATE
             Qt6::Core
             Qt6::Gui
             Qt6::Widgets
             Qt6::Test
             GTest::gtest_main
+            LtsTimelineClassic
         )
         
+        # Ensure LtsTimelineClassic is built before tests (generates export header)
+        add_dependencies(migration_tests LtsTimelineClassic)
+        
         # Grantlee tests require BUILD_GRANTLEE=ON
         if(BUILD_GRANTLEE)
             target_link_libraries(migration_tests PRIVATE codegen_grantlee)