Mods should be able to use external spritesheets for tiles/walls/objects

1. Subscribe to onBeforeGetClientConfig in your mod

onBeforeGetClientConfig: function ({ textureList, atlasTextures }) {
	textureList.push('server/mods/mod-folder/images/newtiles.png');
	atlasTextures.push('server/mods/mod-folder/images/newtiles.png');
}

3. Add a new tileset to your map file. The name of the tileset should exactly match the path you added in step 2

That's literally all you need