Add physical_key to keyboard::Event

Co-authored-by: Exidex <16986685+Exidex@users.noreply.github.com>

core/src/keyboard/event.rs

@@ -1,3 +1,4 @@
+use crate::keyboard::key;
 use crate::keyboard::{Key, Location, Modifiers};
 use crate::SmolStr;
 
@@ -14,6 +15,9 @@ pub enum Event {
         /// The key pressed.
         key: Key,
 
+        /// The physical key pressed.
+        physical_key: key::Physical,
+
         /// The location of the key.
         location: Location,