Differentiate between keyboard/numpad chars

[Laocoon7]

Is your feature request related to a problem? Please describe.
I need to differentiate between the number(key) pad to the right of the arrow keys, and the numbers across the top of the keyboard.

Describe the solution you'd like
A quick and dirty solution would be for KeyEvent to also have a scancode attached allowing the developer to handle specific scan codes. A more elegant solution would be for KeyEvent to hold a keypad(key_1) enum including /*-+[enter] as well.

Describe alternatives you've considered if any
I've dumped events and currently there is no difference between KeyCode::char('1') originating at either spot on the keyboard.

Additional context
KeyEvent::KeypadBegin could be deprecated with this change.