An import/export environment workflow should be added to docs

[kathatherine]

A user shared this workflow cheatsheet on Twitter: https://twitter.com/rasbt/status/1541425752750579713 (see PDF reply for most up to date info)

Would be good to add to the conda docs in some capacity, perhaps adding a one sentence explanation to each command.

Could be added as a different kind of cheatsheet to the conda cheatsheet page.