Fix stuff including texture on pick up items and fix pickup

src/player/Player.cs

@@ -215,16 +215,16 @@ public partial class Player : CharacterBody3D, IPlayer
     this.Provide();
     HealthTimer.Timeout += OnHealthTimerTimeout;
     Hitbox.AreaEntered += Hitbox_AreaEntered;
-    CollisionDetector.BodyEntered += CollisionDetector_BodyEntered;
+    CollisionDetector.AreaEntered += CollisionDetector_AreaEntered;
   }
 
-  private void CollisionDetector_BodyEntered(Node3D body)
+  private void CollisionDetector_AreaEntered(Area3D area)
   {
-    if (body is InventoryItem inventoryItem)
+    if (area.GetParent() is InventoryItem inventoryItem)
     {
       var isAdded = Inventory.TryAdd(inventoryItem);
       if (isAdded)
-        QueueFree();
+        inventoryItem.QueueFree();
     }
   }