Add a Sphinx extension that separates code snippets for different languages/OS into tabs

[stichbury]

Description

I think we want the Inline Tabs extension for Sphinx (https://sphinx-inline-tabs.readthedocs.io/en/latest/usage.html) or maybe the Sphinx Tabs extension (https://sphinx-tabs.readthedocs.io/en/latest/) but I'm hoping @astrojuanlu can advise on this one.

It will improve readability and shorten the text presented on the page.

[astrojuanlu]

Or https://sphinx-design.readthedocs.io/en/latest/tabs.html 😊

[astrojuanlu]

xref executablebooks/meta#955

[astrojuanlu]

Let's go for sphinx-design

[astrojuanlu]

Let's tackle this after #4257