Add Video module

Source/Editor/CustomEditors/Editors/IBrushEditor.cs

@@ -25,6 +25,7 @@ namespace FlaxEditor.CustomEditors.Editors
             new OptionType("Linear Gradient", typeof(LinearGradientBrush)),
             new OptionType("Texture 9-Slicing", typeof(Texture9SlicingBrush)),
             new OptionType("Sprite 9-Slicing", typeof(Sprite9SlicingBrush)),
+            new OptionType("Video", typeof(VideoBrush)),
         };
     }
 }