0.1.0: Added favorites window

Editor/Favorites/Utilities/FavoritesUtility.cs

@@ -0,0 +1,26 @@
+using UnityEditor;
+
+namespace Game.NavigationTool.Editor
+{
+    internal static class FavoritesUtility
+    {
+        private static Favorites FAVORITES;
+
+        static FavoritesUtility()
+        {
+            FAVORITES = null;
+        }
+        
+        public static Favorites GetFavorites()
+        {
+            return FAVORITES ?? (FAVORITES = new Favorites());
+        }
+
+        [MenuItem("Tools/Utilities/Favorites/Delete")]
+        public static void DeleteAll()
+        {
+            FAVORITES = null;
+            EditorPrefs.DeleteKey(Favorites.PREF_ID);
+        }
+    }
+}