Add main mesh fixes

Assets/Asset Cleaner/Data/SelectionChanged.cs

@@ -0,0 +1,17 @@
+using Leopotam.Ecs;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace Asset_Cleaner {
+    class SelectionChanged : IEcsAutoReset {
+        public Object Target;
+        public Scene Scene;
+        public FindModeEnum From;
+
+        public void Reset() {
+            Target = default;
+            Scene = default;
+            From = default;
+        }
+    }
+}