`import sotaai.cv` breaks because `skimage` is not installed with our library

[tonioteran]

I guess we need to add this to the setup.py???

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-1-61cfad82654c> in <module>
----> 1 import sotaai.cv as cv

~/repos/sotarepos/sotaai/sotaai/cv/__init__.py in <module>
      4 # Copyright: Stateoftheart AI PBC 2021.
      5 '''Main CV module to abstract away library specific API and standardize.'''
----> 6 from sotaai.cv import utils
      7 from sotaai.cv import abstractions
      8 from sotaai.cv import keras_wrapper

~/repos/sotarepos/sotaai/sotaai/cv/utils.py in <module>
     11 import time
     12 import os
---> 13 import skimage.transform as st
     14 
     15 # Prevent Tensorflow to print warning and meta logs

ModuleNotFoundError: No module named 'skimage'

[tonioteran]

i think we might need to add scikit-image to the setup.py requirements?