Use a "real" documentation tool/site

[WorldMaker]

Rather than continue to expand the README until it scrolls for days. Maybe TypeDoc or DocFx?

[WorldMaker]

DocFX deploy to Github pages example workflow: https://github.com/jbltx/DiscordFX/blob/master/.github/workflows/deploy-to-github-pages.yml

[WorldMaker]

Discord-like theme for DocFx looks nice to me: https://github.com/jbltx/DiscordFX/