Add few-shot classification PyTorch dataset class to instantiate a sample dataset from

[rosikand]

e.g., package up omniglot and pickle the data into a distribution. goal:

from rsbox import ml
fsds = ml.omniglot()

[rosikand]

Also do this for https://github.com/rosikand/afs-100/tree/main/raw and have afs-100 be a separate package.