keyboard: Introduce a KeyCode type wrapping u32

src/keyboard.rs

@@ -17,12 +17,14 @@ pub enum PressType {
     Pressed = 1,
 }
 
+pub type KeyCode = u32;
+
 #[derive(Debug, Clone)]
 pub struct KeyState {
     pub pressed: PressType,
     pub locked: bool,
     /// A cache of raw keycodes derived from Action::Sumbit given a keymap
-    pub keycodes: Vec<u32>,
+    pub keycodes: Vec<KeyCode>,
     /// Static description of what the key does when pressed or released
     pub action: Action,
 }