This really hacky piece of crap JS/React takes the output from a DOS dir command and makes it in to HTML that you can paste in (as source) to a SharePoint wiki page.
Actually you can use the output anywhere -- it's just links to your folders that it generates. I just built it specifically for SharePoint.
Instructions to get your directory listing are in src/data/output.js. Then just yarn start and open up a browser.
Let me know on the forum if you get stuck. I knocked this up in half a day, it ain't great.
– j.