add joystick support

[jacob-thompson]

fixes #17

[jacob-thompson]

KeyError: 0

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/jacob-thompson/.local/bin/pong", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/Users/jacob-thompson/.local/pipx/venvs/pong-arcade/lib/python3.13/site-packages/pong_arcade/main.py", line 18, in main
    for e in event.get():
             ~~~~~~~~~^^
SystemError: <built-in function get> returned a result with an exception set

seems to be a pygame or sdl issue

only seems to occur when communicating with controllers over bluetooth