Adding a direct polygon mask export

[saskra]

I am working on the same images in the same project with both polygon and more detailed brush masks, which I would like to export and import into Python in the easiest way possible. Right now I'm working on extracting the information I need from the COCO export. However, a welcome simplification for me would be to be able to export both types of labels together with one click as PNG images or even better as Numpy arrays. Would that be possible?