Move layer selection logic from vue to editor (#410)

* Add vue selectLayer(layer, ctrl, shift)

* Individual selection working, range fill next

* Frontend package-lock.json seems apparently needs to be pushed. Weird.

* Selection working with ctrl, shift from editor. Still some bugs to sqaush with folder nesting.

* WIP resolving nesting folders issues

* Changed comparison approach, handling corner cases now

* Fully working selection.

* Reverted changes to package-lock.json

* Removed unused code

* Resolved ctrl click not behaving similar to windows

* Slight comment clarification

* Double checked a windows behavior and corrected. Changed last_selected name.

* Simplified if statement slightly.

* Made the naming clearer regarding UUIDs versus indices

* Clarified comments further

* Minor comment fixup

* Implemented suggestions, clarified comments

* Resolved todo regarding clearing selection when ctrl not pressed

* Ensure we only push responses when needed

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Reviewed by: @TrueDoctor <3

frontend/wasm/src/api.rs

@@ -322,6 +322,11 @@ impl JsEditorHandle {
 		self.dispatch(message);
 	}
 
+	pub fn select_layer(&self, paths: Vec<LayerId>, ctrl: bool, shift: bool) {
+		let message = DocumentMessage::SelectLayer(paths, ctrl, shift);
+		self.dispatch(message);
+	}
+
 	/// Select all layers
 	pub fn select_all_layers(&self) {
 		let message = DocumentMessage::SelectAllLayers;
@@ -443,7 +448,7 @@ impl JsEditorHandle {
 
 	/// Requests the backend to add a layer to the layer list
 	pub fn add_folder(&self, path: Vec<LayerId>) {
-		let message = DocumentMessage::CreateFolder(path);
+		let message = DocumentMessage::CreateEmptyFolder(path);
 		self.dispatch(message);
 	}
 }