A collection of `Gamepad` issues and papercuts

[dubrowgn]

Using v0.17.3.

Couple of issues around gamepads:

• The gamepad events are using the old "controller" nomenclature from sdl2. E.g. Event::ControllerDeviceAdded instead of e.g. Event::GamepadAdded (from SDL_EVENT_GAMEPAD_ADDED).
• The gamepad events return u32 for which, while the gamepad API's take a JoystckID new type. The new sdl3 events use joystick id's instead of u32, so maybe this is related to the previous point.
• Constructing a JoystickID fails, because you can't construct type aliases in rust (see: Cannot construct tuple struct via type alias rust-lang/rust#17422 )
• JoystickID, doesn't implement Debug or Display, so you can't look at it without unwrapping it first.
• Gamepad has_led, has_rumble, and has_rumble_triggers are marked unsafe.

[dubrowgn]

The JoystickId type alias seems to have come from f3e4c0b

cc @naumazeredo

[revmischa]

PRs are open if you want to take a look

[dubrowgn]

These look great, thank you!

I think the 2 PR's above resolve everything except the unsafe functions.