Add 3rd party GUIs, apps, and utilities to README or other supplementary documentation

[dantheman213]

Checklist

• I'm reporting a feature request
• I've verified that I'm running youtube-dl version 2020.01.15
• I've searched the bugtracker for similar feature requests including closed ones

Description

Hi, I'd like to propose that a curated list of GUIs and/or supporting projects that use youtube-dl should be added to README or another supporting *.md file within the project repo.

I have been working on a GUI front-end for Windows 10 that uses automatically managed youtube-dl and ffmpeg under the hood to provide a simplified point-and-click experience of your tool for Windows 10 users. I'd like to add this project dantheman213/JackTheVideoRipper to youtube-dl documentation along with any other notable or useful projects that use youtube-dl to accomplish its task.

[dstftw]

I don't see much point maintaining such list officially. There are just too many of them.