Add AI components and systems for enhanced enemy behavior and pathfinding

GameCore/AI/AIComponent.cs

@@ -0,0 +1,20 @@
+using GameCore.ECS;
+using GameCore.ECS.Interfaces;
+using GameCore.Math;
+
+namespace GameCore.AI;
+
+public class AIComponent : IComponent
+{
+    public AIState CurrentState { get; set; } = AIState.Idle;
+    public Entity? Target { get; set; }
+    public float StateTimer { get; set; } = 0.0f;
+    public Vector3 LastKnownTargetPosition { get; set; } = Vector3.Zero;
+
+    public float SightRange { get; set; } = 20.0f;
+    public float FieldOfView { get; set; } = 90.0f; // in degrees
+    public float AttackRange { get; set; } = 10.0f;
+    public float ChaseGiveUpTime { get; set; } = 5.0f;
+    public float ReactionTime { get; set; } = 0.5f;
+    public float AttackRangeBufferPercent { get; set; } = 0.2f;
+}