Build DIRECTORY.md with JavaScript, not Python

[cclauss]

We present all of of our algorithms in an organized list, DIRECTORY.md so visitors can rapidly find topics of interest. Currently DIRECTORY.md is being autogenerated by one of our GitHub Actions which uses Python code to create the directory text.

Why should the JavaScript repo rely on Python code?!? Especially given that GitHub Actions fully support the creation of JavaScript-based Actions. Can we use JavaScript to autogenerate DIRECTORY.md and lose the Python code in the process?

[sahilbansal17]

@cclauss I would like to work on this.

[cclauss]

No need to wait for permission... Just do it!

[sahilbansal17]

I have added the workflow as a js file in PR #163 .
The yml file needs to be updated so that the action can be run, I tried to look up github actions on javascript documentation and try to figure it out but didn't understand how to run the standalone js file. Some help will be appreciated.