22w01d: Math Practice, Chess AI, and Blob Simulator

In this release we've added two math practice pages: one for practicing multiplication and division up to 12x12, and another for practicing squares from 2x2 to 20x20. We've also improved our chess AI by using Stockfish.JS and adding a list of 8000 grandmaster-level games. Additionally, for our weirdos, there's now a page that lets you play illegal moves against the AI to see how it does. To get into the simulator list of video games, we've added a "Blob Simulator" to zSnout that generates a random blob. However, it usually exceeds the JS stack limit, so it doesn't work half the time. Oh well.

Full Changelog: zSnout/zSnout.com@22w01c...22w01d