[Player] Add AI Pathfinding on a 2D grid to the player character

Assets/External/AstarPathfindingProject/PackageTools/EnumFlagAttribute.cs

@@ -0,0 +1,7 @@
+using UnityEngine;
+
+namespace Pathfinding {
+	/// <summary>\author http://wiki.unity3d.com/index.php/EnumFlagPropertyDrawer</summary>
+	public class EnumFlagAttribute : PropertyAttribute {
+	}
+}