Implement layer renaming (#501)

* Implement layer renaming

* Fix sneaky typo in CSS

Co-authored-by: Moritz Vetter <16950410+HansAuger@users.noreply.github.com>

Co-authored-by: Moritz Vetter <16950410+HansAuger@users.noreply.github.com>

graphene/src/operation.rs

@@ -10,6 +10,7 @@ use std::hash::{Hash, Hasher};
 
 #[repr(C)]
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq)]
+// TODO: Rename all instances of `path` to `layer_path`
 pub enum Operation {
 	AddEllipse {
 		path: Vec<LayerId>,
@@ -124,6 +125,10 @@ pub enum Operation {
 		path: Vec<LayerId>,
 		visible: bool,
 	},
+	SetLayerName {
+		path: Vec<LayerId>,
+		name: String,
+	},
 	SetLayerBlendMode {
 		path: Vec<LayerId>,
 		blend_mode: BlendMode,