[Suggestion] Resourcepack support

[BookWyrm114]

Allow uploading a custom resourcepack or placing one in the plugin folder somewhere to correctly display custom items that use custom modeldata in inventories, and custom font images in the terminal.

[ShirasawaSama]

This is very difficult because the current item preview is rendered by https://github.com/ShirasawaSama/minecraft-render. If we want to realize the function, we must change to real-time rendering, which is a big problem for some devices with low performance and the upstream broadband of the server.

[BookWyrm114]

Ok, maybe eventually it could be added as an optional feature that's disabled by default

[ShirasawaSama]

I will consider implementing this function if more people want it. Because if we want to implement it, we need to modify a lot of things.