DUNE/IMC: Synching with imc-5.5.x. (imcjava hash: c6ee508d424a3cbe45d3de548fce0ca84d3fd587).
Maneuver/VehicleFormation/Coordinator: Update of the IMC messages. Implementation of the logic to activate the formation controller.
Maneuver/VehicleFormation/FormCollAvoid: Update of the IMC messages.
Config: x8-04: Addition of a formation coordinator parameter.