Introduce registry entry and builders

Co-authored-by: kokiriglade <git@kokirigla.de>

paper-api/src/main/java/org/bukkit/GameEvent.java

@@ -141,4 +141,22 @@ public abstract class GameEvent implements Keyed {
     private static GameEvent getEvent(@NotNull String key) {
         return Registry.GAME_EVENT.getOrThrow(NamespacedKey.minecraft(key));
     }
+    // Paper start
+    /**
+     * Gets the range of the event which is used to
+     * notify listeners of the event.
+     *
+     * @return the range
+     */
+    public abstract int getRange();
+
+    /**
+     * Gets the vibration level of the game event for vibration listeners.
+     * Not all events have vibration levels, and a level of 0 means
+     * it won't cause any vibrations.
+     *
+     * @return the vibration level
+     */
+    public abstract int getVibrationLevel();
+    // Paper end
 }

paper-api/src/main/java/org/bukkit/inventory/ItemType.java

@@ -46,7 +46,7 @@ import org.jetbrains.annotations.Nullable;
  * official replacement for the aforementioned enum. Entirely incompatible
  * changes may occur. Do not use this API in plugins.
  */
-@ApiStatus.Internal
+@ApiStatus.Experimental // Paper - already required for registry builders
 public interface ItemType extends Keyed, Translatable, net.kyori.adventure.translation.Translatable { // Paper - add Translatable
 
     /**