Initial draft for Python quickstart

[2percentsilk]

Why:

Closes [issue link]

What's being changed:

Adding a quickstart for Python apps in Codespaces to help guide users through adding and updating a devcontainer definition for their Python projects

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[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[bamurtaugh]

Is there a reason we're updating the ports here (assuming it's based on the update/rebuild example we used to give in remote-try-python)? Perhaps could provide some context on why you'd want to update this, what it's doing, you don't have to designate ports here because Codespaces takes care of dynamic port forwarding, but you can if you'd like.

In my most recent set of changes to remote-try-python, rather than updating forwardPorts, I guide users through updating portsAttributes.

[GeekTrainer]

It generally looks good to me. My primary question is if this is going to be the only intro to Python doc for Codespaces. One of the cool things (to me) is the fact a Flask app like this could run without having to create a Docker container

[2percentsilk]

It generally looks good to me. My primary question is if this is going to be the only intro to Python doc for Codespaces. One of the cool things (to me) is the fact a Flask app like this could run without having to create a Docker container

@GeekTrainer The sample repo I reference will get a readme that has instructions to just open + run without needing to do anything and we'll have that sample repo referenced on our landing page for Codespace docs.

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