Add a tool to auto-generate rendered MiniMessage strings

[zml2008]

Currently, the examples for each MiniMessage tag are produced manually by entering the MiniMessage string into a game instance and taking a screenshot.

We should be able to rig something up to generate this automatically, taking in a properties file of IDs and MiniMessage strings to generate and running the Minecraft client's font renderer headlessly to produce images from this file.

[kezz]

Perhaps KyoriPowered/adventure-webui#67?

[rymiel]

What about webui? (KyoriPowered/adventure-webui#67 is sorta related but that one is more long-shot)

[zml2008]

I'd like to make the documentation site fully functional as a static site -- an embed would be useful for users to try things out, but I wouldn't want to have to render a whole bunch of strings on every page load. I'm not sure webui is super suited to running at build time.

[MiniDigger]

we can both have an embed for try-it-out kinda stuff and expose an api that the docs can use at build time (generate html+css or generate pictures, idk what would be better)

[MiniDigger]

Maybe SVG could be a good middle ground?