Distant Horizons compatibility/integration using API (Enhancement)

Hello there. Java gives me a headache, and despite my best attempts, I couldn't get this working myself.

Right now, Voxy can import Distant Horizons chunks manually from the SQL file, but DH actually has an API for fetching chunk data.

Using this API would make importing DH chunks way easier and automatic. It could also let Voxy act as a frontend for DH’s chunk generation, since DH does a great job generating terrain, and Voxy is much better at rendering it. No more messing with SQL files, just seamless imports.

Since you're already familiar with the DH importer, adding support for automatic chunk imports might not be too difficult. DH's Distant Generation still works when "Render LODs" is disabled, so it can work in the background and create new LODs without having to wait for a manual import.

As a bonus, this would also make Voxy multiplayer-compatible right away, since DH already supports multiplayer.

Start with Voxy’s existing Distant Horizons SQL-file importer and the linked IDhApiTerrainDataRepo API documentation; compare the data and lifecycle each path exposes. Done means DH chunks can be imported automatically through the API, with background generation and multiplayer behavior covered by appropriate tests or a documented verification path.