* Add jsbsim bridge to enable jsbsim for px4 SITL/HIL on jsbsim
This is a PX4 HIL/SITL integration into JSBSim. JSBSim is an open source flight dynamics model (http://jsbsim.sourceforge.net/)
Currently there are three models available which is the rascal, quadrotor_x, hexarotor_x integrated into the bridge.
The simulation can be run with the firmware with the following command for example
```
make px4_sitl jsbsim_rascal
```
The visualization is done flightgear and is done by the bridge sending UDP packets to flightgear. To disable the visualization `HEADLESS=1` when running the make command.
The simulation can be configured through the configuration files under the `config` directory through a xml file. Senor configurations, The xml file name should match the name of the model.
* Update Tools/sitl_run.sh
Co-authored-by: Beat Küng <beat-kueng@gmx.net>
Co-authored-by: Beat Küng <beat-kueng@gmx.net>
JaeyoungLim