Implement Feature Extraction Transforms

Is your feature request related to a problem? Please describe.
A type of transforms that I find useful is to extract features from a segmentation mask (e.g. volume, maximum diameter...) . I usually end up programming it myself extending monai.transforms.Transform or MapTransformd. It might be nice to share this to avoid to have every user to implement it themselves. As a proof of concept I would start with the volume.

Describe the solution you'd like
Have an extra category Feature extraction (not sure of the name) from the existing list of transformation families (Crop and Pad, Intensity, IO, NVIDIA Tool Extension, Post-processing, Signal, Spatial, Smooth Field, MRI Transforms, Utility) in both Vanilla Transforms and Dictionary Transforms.

Describe alternatives you've considered

As an alternative those type of transforms could be added to the Utility category.

Additional context
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I am up to help with the implementation if needed.

Best,
Robin