Center camera on annotation

**Is your feature request related to a problem? Please describe.**
In our use case, we have about 600 labels and 100 annotations per high-res image. Verifying the correctness of these annotations can be very tedious, as you have two options:

1. Zoom in on an annotation until the label is big enough to display the text, which is really tedious when you have 100 small annotations spread out across a high-res image
2. Click an annotation from the "Region" sidebar. This allows you to see the label quickly, but it is now instead a lot more difficult to find out which bounding box it belongs to.

**Describe the solution you'd like**
I think the solution should be to have a hotkey that centers the camera around a bounding box, zooming in enough to make the label readable. Then, you could simply click a region in the sidebar, smash your hotkey and quickly verify if the bounding box contains the correct label.

**Describe alternatives you've considered**
Alternatively, there could be a hotkey that just toggles between each bounding box and zooms in on them. This has the advantage of using only the keyboard. However, some times you don't want to toggle between 99 annotations before reaching the one you actually wanted to see.

Maybe the best solution is to implement both? The two solutions will probably share a lot of code.

**Additional context**
Nothing to add. Happy to answer questions or discuss it further.