add VS Code & jupyter notebook keyboard shortcuts

[samanthacsik]

• https://code.visualstudio.com/docs/getstarted/keybindings
• https://towardsdatascience.com/jypyter-notebook-shortcuts-bf0101a98330
• https://www.earthdatascience.org/courses/intro-to-earth-data-science/open-reproducible-science/jupyter-python/jupyter-notebook-shortcuts/