include a notebook cleanup git hook

[evaschreck42]

As a data engineer, I want to ensure by using the template, that i have a git hook in place, that cleans up the notebooks before commit.
The prerequisites for using this template have to be amended with the packages required for this approach. The solution should support Mac and Windows OS.

Thanks to the author of this post to give a hint for a solution: https://zhauniarovich.com/post/2020/2020-10-clearing-jupyter-output-p3/