Add support for flying wing vehicle (malolo)

[Jaeyoung-Lim]

Problem Description This adds support to a flying wing vehicle called Malolo1 to be used in JSBSim and PX4 SITL. @mvacanti @RomanBapst FYI

Since the vehicle is distributed as LGPL-v2 license, the vehicle is added as a submodule to the repository. The vehicle model is distributed through https://github.com/FGMEMBERS/ATI-Resolution

• Unfortunately, ATI-Resolution name is encoded in the namepsace of the scripts, so re-naming this file will likely break the model, therefore the name was kept.
• The vehicle is controlled via a flight control system therefore px4 just needs to pass the axis inputs (elevator / aileron .etc) directly to the vehicle.

Test The vehicle can be flown in PX4 SITL with the following make command

make px4_sitl jsbsim_malolo

Below shows a screenshot of the vehicle being visualized in flightgear

Additional Context

[mvacanti]

@Jaeyoung-Lim I tried this model. Works great. Keep building the hangar!

[Jaeyoung-Lim]

@mvacanti @bkueng Thanks!