Base files added.

Java-Knight/src/main/java/org/project/entity/Entity.java

@@ -0,0 +1,21 @@
+package org.project.entity;
+
+public interface Entity {
+    void attack(Entity target);
+
+    void defend();
+
+    void heal(int health);
+
+    void fillMana(int mana);
+
+    void takeDamage(int damage);
+
+    int getMaxHP();
+
+    int getMaxMP();
+
+    /*
+    TODO: ADD OTHER REQUIRED AND BONUS METHODS
+    */
+}