Added option to switch to UDP for controls

[ghost]

• Added the ROS param UDP_control to switch between UDP and TCP
• Added docs explaining when to use it

[SijmenHuizenga]

Code looks great! Let's get all documentation sorted, after that we are ready to merge

[SijmenHuizenga]

Thank you so much for writing this documentation! You really got my mind crunching about how to best explain multi-computer setups and the possible problems that can occur.

You did a great job explaining what people should do. I think we can do an even better job explaining the forces behind the recommendations in an effort to help people make informed decisions about their setup.

At the moment, the Local setup tries to achieve two things:

1. Explain the two different setups: one where the ROS bridge is running on the simulator computer and one where the ROS bridge runs on the autonomous system computer.
2. Explain how to get around the WSL bug

To make 1 and 2 super clear, and not scare people who are using both C++ and Python, I suggest we split the two. In this mindset I have re-structured the documentation. I've also moved it into getting-started-with-ros.md as there is more then enough space in there for these docs.

I'm looking forward to hear your opinion on this!

EDIT: Since I am not able to push to your branch I pushed the proposed change here: f00f785

[ghost]

Looks a lot better indeed, I'll add the changes to the pull request. You should be able to push to the pull request though, the 'allow edits by maintainers' option is checked