[Milestone] Second template

[jcbhmr]

Now that there's a first template, there (probably) should come a second. 😉 Preferably another one from https://github.com/microsoft/vscode-dev-containers ? Right now, the forerunners are

• deno Add the Deno template? #24
• azure py Add the Azure Functions Python 3 template? #25

heres a rough outline

• Define what's worthy of a template
• Create the first template Add jupyter-datascience-notebooks template #2
• Figure out what the second template should be
• Write a devcontainer-template.json for it
• Add a test.sh
• Document the template in NOTES.md
• Open a PR to this repo
• Merge it
• Publish it

@eitsupi miss anything?

[jcbhmr]

• Define what's worthy of a template

on second thought i think this is done already? right?