Wave enemies (#9)

* Add enemy wave management and path following components

* cleanup

scripts/components/WaveTriggerComponent.cs

@@ -0,0 +1,52 @@
+using Godot;
+
+namespace Mr.BrickAdventures.scripts.components;
+
+[GlobalClass]
+public partial class WaveTriggerComponent : Node
+{
+    [Export] public Area2D TriggerArea { get; set; }
+    [Export] public EnemyWaveManager WaveManager { get; set; }
+    [Export] public ChaseLevelComponent ChaserToPause { get; set; } // Optional
+    [Export] public bool PauseChaser { get; set; } = true;
+    
+    private bool _hasBeenTriggered = false;
+    
+    public override void _Ready()
+    {
+        if (TriggerArea == null || WaveManager == null)
+        {
+            GD.PrintErr("WaveTriggerComponent is missing a TriggerArea or WaveManager.");
+            SetProcess(false);
+            return;
+        }
+
+        TriggerArea.BodyEntered += OnPlayerEntered;
+        WaveManager.WaveCompleted += OnWaveCompleted;
+    }
+    
+    private void OnPlayerEntered(Node2D body)
+    {
+        if (body is PlayerController && !_hasBeenTriggered)
+        {
+            _hasBeenTriggered = true;
+            
+            if (PauseChaser && ChaserToPause != null)
+            {
+                ChaserToPause.SetChasing(false);
+            }
+            
+            WaveManager.StartWave();
+            TriggerArea.QueueFree();
+        }
+    }
+
+    private void OnWaveCompleted()
+    {
+        GD.Print("Wave completed!");
+        if (PauseChaser && ChaserToPause != null)
+        {
+            ChaserToPause.SetChasing(true);
+        }
+    }
+}