refactor: Replace hardcoded node paths with constants and remove ScoreComponent.

Autoloads/StatisticsManager.cs

@@ -1,5 +1,6 @@
 using Godot;
 using Godot.Collections;
+using Mr.BrickAdventures;
 
 namespace Mr.BrickAdventures.Autoloads;
 
@@ -11,8 +12,8 @@ public partial class StatisticsManager : Node
 
     public override void _Ready()
     {
-        _gameManager = GetNode<GameManager>("/root/GameManager");
-        _achievementManager = GetNode<AchievementManager>("/root/AchievementManager");
+        _gameManager = GetNode<GameManager>(Constants.GameManagerPath);
+        _achievementManager = GetNode<AchievementManager>(Constants.AchievementManagerPath);
         LoadStatistics();
     }
 
@@ -28,7 +29,7 @@ public partial class StatisticsManager : Node
             _gameManager.PlayerState["statistics"] = _stats;
         }
     }
-    
+
     /// <summary>
     /// Increases a numerical statistic by a given amount.
     /// </summary>