Add complex mission item exit coordinate support

src/FlightMap/MapItems/MissionItemIndicator.qml

src/FlightMap/MapItems/MissionItemView.qml

src/FlightMap/Widgets/VibrationWidget.qml

src/MissionEditor/MissionEditor.qml

src/MissionManager/ComplexMissionItem.cc

src/MissionManager/ComplexMissionItem.h

src/MissionManager/MissionController.cc

src/MissionManager/MissionController.h

src/MissionManager/SimpleMissionItem.cc

src/MissionManager/SimpleMissionItem.h

src/MissionManager/VisualMissionItem.cc

src/MissionManager/VisualMissionItem.h