Cutout data augmentation

[wyli]

Is your feature request related to a problem? Please describe.
"CoarseDropout of the square regions in the image"

2D version is included in albumentations:
https://github.com/albumentations-team/albumentations/blob/95a048d342cbe748e5acf15cb1a28611a6303885/albumentations/augmentations/transforms.py#L608-L609
would be great to have an ND version in this repo.

see also: https://arxiv.org/abs/1708.04552