[FeatureRequest] Improved bounding box support

[mibaumgartner]

Description
Transforms to switch between bounding boxes and instance segmentation with support for different formats for the bounding boxes.

Proposal
Double check the existing transforms for converting between different representations and add support for different bounding box representations.

Additional context
Example from albumentations: https://albumentations.readthedocs.io/en/latest/api/core.html#albumentations.core.composition.BboxParams