Code cleanup and refactoring to enhance consistency (#1695)

- Move message handler payload data into structs
- Organize the file structure used by `editor/src/messages/portfolio/document` `/node_graph` and `/graph_operation`
- Make derive attributes use `serde::Serialize, serde::Deserialize` consistently instead of `use serde::{Deserialize, Serialize};` imports
- Various other code cleanup and refactoring

libraries/bezier-rs/src/bezier/lookup.rs

@@ -208,6 +208,7 @@ impl Bezier {
 #[cfg(test)]
 mod tests {
 	use super::*;
+
 	#[test]
 	fn test_evaluate() {
 		let p1 = DVec2::new(3., 5.);

libraries/bezier-rs/src/subpath/lookup.rs

@@ -120,11 +120,10 @@ impl<ManipulatorGroupId: crate::Identifier> Subpath<ManipulatorGroupId> {
 
 #[cfg(test)]
 mod tests {
+	use super::*;
 	use crate::consts::MAX_ABSOLUTE_DIFFERENCE;
 	use crate::utils::f64_compare;
 
-	use super::*;
-
 	#[test]
 	fn length_quadratic() {
 		let start = DVec2::new(20., 30.);

libraries/bezier-rs/src/subpath/manipulators.rs

@@ -121,9 +121,9 @@ impl<ManipulatorGroupId: crate::Identifier> Subpath<ManipulatorGroupId> {
 
 #[cfg(test)]
 mod tests {
+	use super::*;
 	use crate::utils::SubpathTValue;
 
-	use super::*;
 	use glam::DVec2;
 
 	fn set_up_open_subpath() -> Subpath<EmptyId> {

libraries/bezier-rs/src/subpath/solvers.rs

@@ -417,11 +417,11 @@ impl<ManipulatorGroupId: crate::Identifier> Subpath<ManipulatorGroupId> {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::Bezier;
-	use glam::DVec2;
-
 	use crate::consts::MAX_ABSOLUTE_DIFFERENCE;
 	use crate::utils;
+	use crate::Bezier;
+
+	use glam::DVec2;
 
 	fn normalize_t(n: i64, t: f64) -> f64 {
 		t * (n as f64) % 1.

libraries/dyn-any/src/lib.rs

@@ -168,7 +168,9 @@ macro_rules! impl_slice {
 
 mod slice {
 	use super::*;
+
 	use core::slice::*;
+
 	impl_slice!(Iter, IterMut, Chunks, ChunksMut, RChunks, RChunksMut, Windows);
 }