3.8.7: New "Add prefix" checkbox and Noetic parsing fix

Recently I have found myself comparing multiple rosbags / MCAPS a lot.

It was always possible to do this, selecting multiple files in the dialog, but I realized that if it is cumbersome if only one of the two files changed and you want to reload that only.

With the addition of the checkbox below, you can now do the same, even when loading files one by one.
When checked, you will be able to add a prefix to the loaded timeseries and the dialog asking if you want to delete the previous ones will be skipped.