ChatDBG fails with error when certain options are passed

[nicovank]

Seems like we could improve the error message. Maybe try/except and print --help message on exception?

> chatdbg --version
Traceback (most recent call last):
  File "/usr/local/bin/chatdbg", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/ChatDBG/src/chatdbg/__main__.py", line 37, in main
    ipdb.__main__.main()
  File "/usr/local/lib/python3.12/dist-packages/ipdb/__main__.py", line 275, in main
    opts, args = getopt.getopt(sys.argv[1:], 'mhc:', ['help', 'command='])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/getopt.py", line 93, in getopt
    opts, args = do_longs(opts, args[0][2:], longopts, args[1:])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/getopt.py", line 157, in do_longs
    has_arg, opt = long_has_args(opt, longopts)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/getopt.py", line 174, in long_has_args
    raise GetoptError(_('option --%s not recognized') % opt, opt)
getopt.GetoptError: option --version not recognized