Example for IMU data sending

[Wumpf]

The SeriesLine visualizer is now able to plot multiple scalars per entity (#9033), we should make a cool example using this for IMU data of a robot.

A cool visualization for IMU data and 3d pose/orientation would be the TUM VI dataset. Perhaps visualizing the filtered orientation based on IMU readings, alongside camera position in 3D (similar to oxkitsune/vqf).

This could also be integrated into the existing VRS example (rerun-io/cpp-example-vrs).