Make rosbag dataloader take path to dir

[benemer]

We can now pass a path to a directory containing multiple .bag files or ROS 2 files with a metadata.yaml while specifying the rosbag dataloader. So far, this has only been possible by not passing a dataloader argument and relying on the guess_dataloader function to read the bagfiles and turn them into a list of file paths.

[tizianoGuadagnino]

Benedetto tu sei Benedetto