eleventy-test: where does a tool for Eleventy testing go on the website

[Denperidge]

Hi! I just finished the first proper draft of eleventy-test, which allows you to use multiple Eleventy versions & configurations for testing a plugin/whatever.

I don't know if this falls under the "PR your plugin here" or if there's another spot on the site it'd better fit, or if it's not fitting for the website. But thought I'd at least ask!