GitHub also has something like this as a standard in their docs.
Hoodie has these super awesome first-timers-only issues that guide new contributors through the contribution process. The problem was that creating these step-by-step issues would usually take the maintainer longer than to do the fix themselves. So Gregor asked us to build a bot that would automate this process. And so First Timers was born!
Listen to The Changelog #264 to get the full back story on Probot