Merge branch 'load-additional-scene' of https://github.com/nothingTVatYT/FlaxEngine into nothingTVatYT-load-additional-scene

Source/Editor/Content/Proxy/SceneProxy.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 using System;
+using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.Windows;
 using FlaxEngine;
 
@@ -68,5 +69,11 @@ namespace FlaxEditor.Content
         {
             return new SceneItem(path, id);
         }
+
+        /// <inheritdoc />
+        public override void OnContentWindowContextMenu(ContextMenu menu, ContentItem item)
+        {
+            menu.AddButton("Open additionally", () => { Editor.Instance.Scene.OpenScene(((SceneItem)item).ID, true); });
+        }
     }
 }