🚀 Feature: Konami Code easter egg (likely: konamimojisplosion)

[JoshuaKGoldberg]

Overview

Despite the high relevancy of the Konami Code to this retro game project, there is no such easter egg in the game or on the site at all. Shame.

I'm also the creator+maintainer of https://www.npmjs.com/package/konamimojisplosion so I'd like to include that script as a fun, quick easter egg.

One complication is that https://unpkg.com/konamimojisplosion/dist/global.js takes up 11.7 kB uncompressed. This game's site is already at 254 kB uncompressed. I'd like to keep to a 256 kB performance budget if possible (it's announced on Twitter, even). So there has to be about 10 kB of savings somewhere to make this work.

[JoshuaKGoldberg]

Oh, @codewithjulie did this in #21 😄