Initial Corridor Scan support

UnitTest.qrc

qgroundcontrol.pro

qgroundcontrol.qrc

src/MissionManager/CameraCalc.h

src/MissionManager/ComplexMissionItem.h

src/MissionManager/CorridorScan.SettingsGroup.json

src/MissionManager/CorridorScanComplexItem.cc

src/MissionManager/CorridorScanComplexItem.h

src/MissionManager/CorridorScanComplexItemTest.cc

src/MissionManager/CorridorScanComplexItemTest.h

src/MissionManager/MissionController.cc

src/MissionManager/MissionController.h

src/MissionManager/QGCMapPolygon.cc

src/MissionManager/QGCMapPolygon.h

src/MissionManager/QGCMapPolygonTest.cc

src/MissionManager/QGCMapPolygonTest.h

src/MissionManager/QGCMapPolyline.cc

src/MissionManager/QGCMapPolyline.h

src/MissionManager/QGCMapPolylineTest.cc

src/MissionManager/QGCMapPolylineTest.h