SPIGOT-7221: Add Enemy (Entity) interface

By: ShaneBee <shanebolenback@me.com>

paper-api/src/main/java/org/bukkit/entity/EnderDragon.java

@@ -8,7 +8,7 @@ import org.jetbrains.annotations.Nullable;
 /**
  * Represents an Ender Dragon
  */
-public interface EnderDragon extends ComplexLivingEntity, Boss, Mob {
+public interface EnderDragon extends ComplexLivingEntity, Boss, Mob, Enemy {
 
     /**
      * Represents a phase or action that an Ender Dragon can perform.

paper-api/src/main/java/org/bukkit/entity/Enemy.java

@@ -0,0 +1,6 @@
+package org.bukkit.entity;
+
+/**
+ * Represents an Enemy
+ */
+public interface Enemy extends LivingEntity {}

paper-api/src/main/java/org/bukkit/entity/Ghast.java

@@ -3,7 +3,7 @@ package org.bukkit.entity;
 /**
  * Represents a Ghast.
  */
-public interface Ghast extends Flying {
+public interface Ghast extends Flying, Enemy {
 
     /**
      * Gets whether the Ghast is charging

paper-api/src/main/java/org/bukkit/entity/Hoglin.java

@@ -3,7 +3,7 @@ package org.bukkit.entity;
 /**
  * Represents a Hoglin.
  */
-public interface Hoglin extends Animals {
+public interface Hoglin extends Animals, Enemy {
 
     /**
      * Gets whether the hoglin is immune to zombification.

paper-api/src/main/java/org/bukkit/entity/Monster.java

@@ -3,4 +3,4 @@ package org.bukkit.entity;
 /**
  * Represents a Monster.
  */
-public interface Monster extends Creature {}
+public interface Monster extends Creature, Enemy {}

paper-api/src/main/java/org/bukkit/entity/Phantom.java

@@ -3,7 +3,7 @@ package org.bukkit.entity;
 /**
  * Represents a phantom.
  */
-public interface Phantom extends Flying {
+public interface Phantom extends Flying, Enemy {
 
     /**
      * @return The size of the phantom

paper-api/src/main/java/org/bukkit/entity/Shulker.java

@@ -4,7 +4,7 @@ import org.bukkit.block.BlockFace;
 import org.bukkit.material.Colorable;
 import org.jetbrains.annotations.NotNull;
 
-public interface Shulker extends Golem, Colorable {
+public interface Shulker extends Golem, Colorable, Enemy {
 
     /**
      * Gets the peek state of the shulker between 0.0 and 1.0.

paper-api/src/main/java/org/bukkit/entity/Slime.java

@@ -3,7 +3,7 @@ package org.bukkit.entity;
 /**
  * Represents a Slime.
  */
-public interface Slime extends Mob {
+public interface Slime extends Mob, Enemy {
 
     /**
      * @return The size of the slime