GLM hierarchical binomial model

[OriolAbril]

File: https://github.com/pymc-devs/pymc-examples/blob/main/examples/generalized_linear_models/GLM-hierarchical-binominal-model.ipynb
Reviewers: @OriolAbril

Context

Notebook had a PR to update it to "Best Practices" before the start of the tracking project.

[cuchoi]

Working on this one

[twiecki]

Closed by #355