Add new notebook "Dependencies / Python packages and libraries in Part III: Reference documentation"

Data retrieval GBIF & LAND is too long.

The description about Dependencies etc. is at the moment here: https://stag.training.fdz.ioer.info/notebooks/202_data_retrieval_gbif.html#dependencies-new-notebook-in-part-3-references.

I can copy and paste the text.

I would prefer to cross reference