✨ Add support for new SNBT JSON text format

[SnaveSutit]

Animated Java currently partially supports the new SNBT JSON text format. It generally outputs it alright. But it's definitely not all there.

Goals

1. All JSON text inputs should fully support the new SNBT-based JSON text format.
2. All data pack exporters should export the correct stringified JSON text format for their target Minecraft version.
3. The JsonText class should handle all parsing & transformation.

Checklist

• Add support for parsing SNBT JSON text to JsonText.
• Add support for creating a SNBT JSON text string to JsonText.
• Add support to the UI for Text Displays.
• Add support to data pack exporter.