BUILD_RTI conditional fixes and Qt6 API updates

- cmake/FindRTI.cmake: Add INTERFACE placeholder targets when RTI not found
- cmake/FindRTI.cmake: Force BUILD_RTI=OFF when RTI not installed
- Lts/Common/LtsSession/CMakeLists.txt: Make LtsSessionDataDds conditional on BUILD_RTI
- Lts/Viewer/CMakeLists.txt: Make LtsDataView conditional on BUILD_RTI
- Lts/Plugins/*/CMakeLists.txt: 97 plugin files wrapped in BUILD_RTI conditionals
- cmake/NGLMacros.cmake: Fix NGL_ADD_BIG_RESOURCES macro (removed premature return())
- Multiple Qt6 API fixes: QLinkedList→std::list, QStringRef→QStringView, etc.
- BUILD_RTI_FIXES_SUMMARY.md: Comprehensive documentation of all fixes

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/include/Services/AreaEffectSimulation/aes.hpp

@@ -77,11 +77,16 @@ public:
   AesFilter() = default;
   virtual ~AesFilter() = default;
   
+  // ID getter/setter
+  int id() const { return m_id; }
+  void setId(int id) { m_id = id; }
+  
   // Content getter/setter für DDS-Daten
   QString content() const { return m_content; }
   void setContent(const QString& content) { m_content = content; }
   
 private:
+  int m_id = 0;
   QString m_content;
 };