Brush tool live preview (#1116)

* Disable vector preview for brush tool

* Fix brush preview

* Fix warping

* Left and right square brackets to change size

* Add linear interpolation

* Modfiy existing selected brush layer

* Resolve warnings

---------

Co-authored-by: Dennis Kobert <dennis@kobert.dev>
Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -1628,6 +1628,7 @@ impl DocumentMessageHandler {
 							path: path.clone(),
 							image_data: data.image_data.clone(),
 							mime: node_graph_frame.mime.clone(),
+							transform: None,
 						});
 					}
 				}