Feature request: get info about connected gamepads

LOVE has a really nice joystick API where you can getJoysticks() to return a table of the connected joystick objects.

You can then use joystick:getName() and it will return a value like XBox 360 Controller or 8Bitdo SN30 Pro.

I think this would be useful for:

1. Giving feedback to the player about what devices the game is seeing and utilizing.
2. We can use the gamepad name to automatically configure bindings. For example, the Xbox 360 controller is very common, so our game script can detect it (if joystick:get_name() == "Xbox 360 Controller") and automatically bind button 0 to "action", button 2 to "attack", etc.

(It's possible I'm undersimplifying USB gamepads, but this is my theory)