Integrate mobile robots by interfacing with airo-tulip

[m-decoster]

Describe your changes

This branch integrates with airo-tulip - currently at version 0.1.0 - to control our KELO mobile platform. The contributions are located in airo-robots, and are fairly limited in scope, with most of the implementation being low-level code that is implemented in the airo-tulip repository. The interface in airo-robots simply communicates with the KELO platform over TCP (technically, via 0MQ), which is abstracted away by the KELORobile class.

The contributions follow the existing class structure of airo-robots, introducing a MobileRobot interface, which is implemented by the KELORobile class. The KELORobile class also adds some methods that are not present in the interface, because they are specific to the KELO robot.

As the airo-tulip repository is going to undergo further changes in the near future, this interface in AIRO-mono is also subject to changes. At this time, no breaking changes are expected, but also not ruled out.

Checklist

• Have you modified the changelog?
• If you made changes to the hardware interfaces, have you tested them using the manual tests?