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

scripts/Events/SpeedRunEventHandler.cs

@@ -0,0 +1,23 @@
+using Godot;
+using Mr.BrickAdventures.Autoloads;
+
+namespace Mr.BrickAdventures.scripts.Events;
+
+[GlobalClass]
+public partial class SpeedRunEventHandler : Node
+{
+    private SpeedRunManager _speedRunManager;
+
+    public override void _Ready()
+    {
+        _speedRunManager = GetNode<SpeedRunManager>("/root/SpeedRunManager");
+        var eventBus = GetNode<EventBus>("/root/EventBus");
+        
+        eventBus.LevelCompleted += OnLevelCompleted;
+    }
+
+    private void OnLevelCompleted(int levelIndex, Node currentScene, double completionTime)
+    {
+        _speedRunManager.Split();
+    }
+}