migrate wiki to docusaurus

[Chew]

The current progress of the migration to Docusaurus.

This PR supersedes the inactive #198. (closes #198)

Also fixes #185 and closes #186.

Preview: https://chew-geyserwiki.pages.dev

To Do:

• [x] Fix setup pages
• [x] Fix supported hosting providers pages
• [x] Fix FAQ page
• [x] Support data variables
• [x] Finish (or remove) home page
• [ ] Algolia searching
• [x] Make theme match old wiki
• [x] Setup i18n support

[Kas-tle]

Geyser setup page should more or less work now just needs some CSS for the icons and selectors, and maybe updated links. Version variables also work now with, for example:

import { Versions } from '~/components/Versions'

<Versions platform="java"/>

This displays 1.20.4.

Will try to tackle Floodgate setup and FAQ tomorrow.

[onebeastchris]

Will be done in a separate repo: https://github.com/GeyserMC/GeyserWebsite/