New overlay system that reimplements how overlays are drawn (#418)

* New overlay system that reimplements how overlays are drawn

* Fix overlay message declaration

* Fix small mistake

* WIP (broken) changes to plumb the overlay document

* Fix confusion over messaging system architecture

* Removed log

* Overlay system working

* (broken) WIP overlay association

* Finish the overlay system (except test failure)

* Change back IDs in test

* Fixed test, but stilled fails due to revealed real problem with layer reordering selection

* Disable broken test that has a bug in issue #444

Co-authored-by: Dennis <dennis@kobert.dev>
Co-authored-by: otdavies <oliver@psyfer.io>

editor/src/input/input_preprocessor.rs

@@ -112,6 +112,16 @@ impl MessageHandler<InputPreprocessorMessage, ()> for InputPreprocessor {
 						}
 						.into(),
 					);
+					responses.push_back(
+						DocumentMessage::Overlay(
+							graphene::Operation::TransformLayer {
+								path: vec![],
+								transform: glam::DAffine2::from_translation(translation).to_cols_array(),
+							}
+							.into(),
+						)
+						.into(),
+					);
 				}
 			}
 		};