[Parafoil] Add landing flare

CMakeLists.txt

src/Parafoil/AltitudeTrigger/AltitudeTrigger.cpp

src/Parafoil/AltitudeTrigger/AltitudeTrigger.h

src/Parafoil/AltitudeTrigger/AltitudeTriggerConfig.h

src/Parafoil/Configs/WingConfig.h

src/Parafoil/StateMachines/WingController/WingController.cpp

src/Parafoil/StateMachines/WingController/WingController.h

src/Parafoil/parafoil-entry.cpp