GUI Textures

The GUITextures registered previously can simply be accessed by calling

val EXAMPLE_GUI = GuiTexture.of(ExampleAddon, "example_gui")

you might then want to store them in a singleton object GuiTexture, similar to blocks and items.

In order to use a gui texture, call the getTitle method on it, and use the resulting title for a Gui.
If you're making a TileEntityGui, the GuiTexture can be directly set in its constructor.