Qt6 Migration: Merge latest Qt5 devel content and apply migration fixes

- Merged 292 changed files from dlbo snapshot
- Fixed IDL enum collisions (PortType, PdmEventType)
- Fixed Grantlee template for C++11 scoped enums
- Fixed CMake VERSION_GREATER syntax
- Added missing directories (THP, LtsRestClient, etc.)

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

Lts/Common/CodeGen/svc_translation.cpp.grantlee

@@ -22,7 +22,7 @@ QString toString({{ idl_enum.name }} state)
 {
   switch(state.underlying())
   {{% for idl_member in idl_enum.member %}
-  case {{ idl_enum.name }}::{{ idl_member.key }}: return QCoreApplication::translate("{{ idl_enum.name }}", "{{ idl_member.key }}");
+  case {{ idl_enum.name }}_def::{{ idl_member.key }}: return QCoreApplication::translate("{{ idl_enum.name }}", "{{ idl_member.key }}");
   {% endfor %}
   default: break;
   }