Massively reorganize and clean up the whole Rust codebase (#478)

* Massively reorganize and clean up the whole Rust codebase

* Additional changes during code review

editor/src/misc/hints.rs

@@ -1,7 +1,7 @@
-use serde::{Deserialize, Serialize};
-
 use crate::input::keyboard::{Key, MouseMotion};
 
+use serde::{Deserialize, Serialize};
+
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct HintData(pub Vec<HintGroup>);
 
@@ -13,8 +13,10 @@ pub struct HintInfo {
 	pub key_groups: Vec<KeysGroup>,
 	pub mouse: Option<MouseMotion>,
 	pub label: String,
-	pub plus: bool, // Prepend the "+" symbol indicating that this is a refinement upon a previous entry in the group
+	/// Prepend the "+" symbol indicating that this is a refinement upon a previous entry in the group.
+	pub plus: bool,
 }
 
+/// Only `Key`s that exist on a physical keyboard should be used.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-pub struct KeysGroup(pub Vec<Key>); // Only use `Key`s that exist on a physical keyboard
+pub struct KeysGroup(pub Vec<Key>);