New tutorial for: Classification with TransformersZeroShotDocumentClassifier

[bilgeyucel]

Describe the tutorial you would like to see here
Tutorial for document classification using the new TransformersZeroShotDocumentClassifier

Additional context
Notebook to start with https://colab.research.google.com/drive/14MePueaeZ1KSdv69YZi1gNfyyUwvNnPi?usp=sharing

[x] I've checked the existing tutorials