Update devenv docs to include a Docker alt for WSL

[bgoewert]

Description

I was somewhat disappointed to see that WAMP and MAMP were listed as Docker alternatives but nothing about WSL. So I added another list item for it that includes a link to what WSL is for those that might not know it exists.

Also included an install script that I had previously made, which may or may not need improvements. It was written with my preference of using .local domain names and thus requires knowledge of modifying the hosts file. The plan was to figure something out that might automagically add the desired domain to the hosts file, but I just haven't gotten around to it.

This example script also does not check nor install Apache/NginX, MySql/MariaDB, or PHP packages. So those will also need to have been set up prior to running. Which I have an unpublished script for but it is hard-coded with my preferences.

So it may not be rated E for Everyone. But I think it deserves a note? Up for debate.

Testing Instructions

Screenshots

Types of changes

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• I've tested my changes with keyboard and screen readers.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).
• I've updated related schemas if appropriate.

[github-actions]

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[bgoewert]

Closing this old PR of mine. WSL is a very good alternative to WAMP/Docker, and I still think it should be listed. But seeing as @wordpress/env exists, I don't see how it's necessary to use anything else.