Add the 'Basic Brush' node and replace the legacy Brush tool implementation with it (#4469)

* Draw raster images with pad extension instead of repeat

* Add the GPU basic brush renderer

* Rework the brush tool around the GPU basic brush

* Remove the CPU brush implementation

editor/src/messages/preferences/preferences_message_handler.rs

@@ -93,6 +93,7 @@ impl MessageHandler<PreferencesMessage, PreferencesMessageContext<'_>> for Prefe
 					zoom_with_scroll: self.zoom_with_scroll,
 				});
 				responses.add(FrontendMessage::UpdateUIScale { scale: self.ui_scale });
+				responses.add(ToolMessage::RefreshToolShelf);
 			}
 			PreferencesMessage::ResetToDefaults => {
 				responses.add(PreferencesMessage::Load { preferences: Self::default() });