Lts/Services: finalize Qt6/C++17 migration cleanup

Remove deprecated Qt5 patterns remaining in Services:

- Replace remaining SIGNAL/SLOT string syntax with function pointer syntax
  (NmeaManagement/socket_handler.cpp, AudioVideoManagement/ModuleTests/mvs_tests.cpp)

- Remove Qt::UniqueConnection (deprecated in Qt6, default behavior) from
  19 files across AES, CES plugins, and cross-services (47 occurrences)

- Remove umbrella #include <QtCore> from fire_automaton.h and
  aes_test_fire_automaton.h (specific includes suffice)

25 files changed, 74 insertions(+), 81 deletions(-)

qt6-after/qt6-migrated-legatus/Lts/Services/TargetManagement/shootback_controller.cpp

@@ -125,7 +125,7 @@ bool ShootbackController::initDds(std::shared_ptr<HandlerShootbackArea> handlerA
 
   // ShootbackArea
   connect(m_handlerShootbackArea.get(), &HandlerShootbackArea::objectChanged,
-          this, &ShootbackController::onShootbackAreaChanged1, Qt::UniqueConnection);
+          this, &ShootbackController::onShootbackAreaChanged1);
 
   m_handlerShootbackArea->objectShootbackAreas([this](const TargetManagement::ObjectShootbackArea & data)
   {
@@ -134,17 +134,17 @@ bool ShootbackController::initDds(std::shared_ptr<HandlerShootbackArea> handlerA
 
   // ShootbackTarget
   connect(m_handlerShootbackTarget.get(), &HandlerShootbackTarget::objectChanged,
-          this, &ShootbackController::onShootbackTargetChanged, Qt::UniqueConnection);
+          this, &ShootbackController::onShootbackTargetChanged);
 
   // TargetAreaAssignment
   connect(m_handlerTargetAreaAssignment.get(), &HandlerTargetAreaAssignment::objectChanged,
-          this, &ShootbackController::onTargetAreaAssignmentChanged, Qt::UniqueConnection);
+          this, &ShootbackController::onTargetAreaAssignmentChanged);
 
   // finally:
 
   // PPM:
   connect(m_mainHandler->dds()->dtcPpm().get(), &ParticipantManagement::Interface::Dtc::participantPositionChanged,
-          this, &ShootbackController::onParticipantPositionChanged, Qt::UniqueConnection);
+          this, &ShootbackController::onParticipantPositionChanged);
 
   return true;
 }