Add interfaces

Java-Knight/src/main/java/org/project/Interface/IAttachable.java

@@ -0,0 +1,8 @@
+package org.project.Interface;
+
+import org.project.entity.Entity;
+
+public interface IAttachable {
+    public void AttachTo(Entity entity);
+    public void DeattachFrom(Entity entity);
+}

Java-Knight/src/main/java/org/project/Interface/IDamageable.java

@@ -0,0 +1,9 @@
+package org.project.Interface;
+
+import org.project.constants.gameConstant.AttackPowerUp;
+
+public interface IDamageable {
+    public void TakeDamage(int amount, AttackPowerUp[] powerUps);
+    public boolean IsDestroyed();
+    public void HandleZeroHealth();
+}

Java-Knight/src/main/java/org/project/Interface/IDamager.java

@@ -0,0 +1,7 @@
+package org.project.Interface;
+
+public interface IDamager {
+    public void Damage(IDamageable target);
+    public IDamager[] GetUtils();
+    public int GetDamage();
+}

Java-Knight/src/main/java/org/project/Interface/IDefendable.java

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+package org.project.Interface;
+
+public interface IDefendable {
+    public IDefender[] GetDefenders();
+}

Java-Knight/src/main/java/org/project/Interface/IDefender.java

@@ -0,0 +1,8 @@
+package org.project.Interface;
+
+import org.project.constants.gameConstant.AttackPowerUp;
+
+public interface IDefender {
+    public int Apply(int damage, AttackPowerUp[] powerUps);
+    public int GetDefense();
+}

Java-Knight/src/main/java/org/project/Interface/IHealable.java

@@ -0,0 +1,5 @@
+package org.project.Interface;
+
+public interface IHealable {
+    public void Heal(int amount);
+}