Scroll only list of labels when labeling bboxes

**Is your feature request related to a problem? Please describe.**
I currently use label studio to annotate pictures and have around 100 different labels I need to use.
That means I have to scroll through the list of available labels quiet often.
The problem is, that when I scroll down I also scroll away from my picture.
I have around 4 to 8 labels per picture. That means I have to scroll up and down maybe 10 times per image.
That is a major time waste and not really ergonomic.

**Describe the solution you'd like**
I would love to be able to scroll through the list independent to the rest of the page.

**Describe alternatives you've considered**
I tried the quick filter but having to type part of every label is a waste of time when labeling a larger amound of pictures.
Another idea would be to be able to filter by using a checkbox list. Basically just a filter with checkboxes to only show the labels I need in that picture (with the filter settings persisting to the next task).