Add EventBus, SpeedRunManager, and GhostManager; implement ghost recording and playback features

scripts/Events/GhostEventHandler.cs

@@ -0,0 +1,31 @@
+using Godot;
+using Mr.BrickAdventures.Autoloads;
+
+namespace Mr.BrickAdventures.scripts.Events;
+
+[GlobalClass]
+public partial class GhostEventHandler : Node
+{
+    private GhostManager _ghostManager;
+
+    public override void _Ready()
+    {
+        _ghostManager = GetNode<GhostManager>("/root/GhostManager");
+        var eventBus = GetNode<EventBus>("/root/EventBus");
+        
+        eventBus.LevelStarted += OnLevelStarted;
+        eventBus.LevelCompleted += OnLevelCompleted;
+    }
+
+    private void OnLevelStarted(int levelIndex, Node currentScene)
+    {
+        GD.Print($"GhostEventHandler: Level {levelIndex} started.");
+        _ghostManager.StartRecording(levelIndex);
+        _ghostManager.SpawnGhostPlayer(levelIndex, currentScene);
+    }
+    
+    private void OnLevelCompleted(int levelIndex, Node currentScene, double completionTime)
+    {
+        _ghostManager.StopRecording(true, completionTime);
+    }
+}