Add updated Biomass Proxy Workflows example notebook

[teije01]

Updated the biomass proxy workflow notebook on which the biomass proxy workflow example is based.
It features:

• obtaining credentials via keyring
• plotting grids from a bucket using rasterio
• retrieving results and creating a pandas DataFrame from the result statistics

Internal ref: CONTENT-682

[teije01]

Should I delete the notebook under jupyter-notebooks/subscriptions_api_tutorial/Biomass_Proxy_PV_Subs_Ohio.ipynb?

[mkshah605]

Looks good overall!!

A couple small things (that may already have been there before my I'm just noticing them)

• Whenever we mention Google Cloud, can we ensure that those two words are capitalized? There are a lot of different versions of this currently, with regards to capitalization

• In cell 12 (under "Inspect Results) can we print out only a subset of results so that the printed results don't take up as much space in the final notebook? Printing out the first ~5 or so should be okay, with an added note that there are more results, we are only displaying 5 (as an example).

Otherwise, looks great. Thanks so much!!

[teije01]

I've updated the merge request with your two comments:

• All "Google Cloud" are now capitalized
• The Inspect Results cell now truncates all but the first and last results in the example