Move model loading to the correct event. Fixes #2991 (#2994)

* Use the correct event for loading models.
* Introduce IModelRegistry to wrap the ModelLoader

src/main/java/appeng/bootstrap/components/TesrComponent.java

@@ -32,7 +32,7 @@ import appeng.tile.AEBaseTile;
  * @param <T>
  */
 // public class TesrComponent<T extends AEBaseTile> implements ModelRegComponent
-public class TesrComponent<T extends AEBaseTile> implements PreInitComponent
+public class TesrComponent<T extends AEBaseTile> implements IPreInitComponent
 {
 
 	private final Class<T> tileEntityClass;