Migrate settings to a more manageable structure and implement Service Locator pattern for runtime Addressables retrieval

Assets/Editor/ItemPrefabEditor.cs

@@ -18,7 +18,7 @@ namespace Editor
         private enum ItemType { None, Pickup, ItemSlot }
         private ItemType _itemType = ItemType.None;
 
-        [MenuItem("Tools/Item Prefab Editor")]
+        [MenuItem("AppleHills/Item Prefab Editor")]
         public static void ShowWindow()
         {
             var window = GetWindow<ItemPrefabEditorWindow>("Item Prefab Editor");