Improve --version command line flag

[jman-schief]

Describe the bug

The --version flag does not appear in the list of command line parameters when running amiberry --help but it is accepted. Though it does not show the version. Running with --help shows the program version.

$ amiberry --version

Copyright (C) 2025 Dimitris Panokostas

$ amiberry --help | head
$VER: Amiberry v7.0.7 (2025-03-30)
Usage:
 -h                         Show this help.
 --help                     
...

To Reproduce
See examples above

Expected behavior

$ amiberry --version
$VER: Amiberry v7.0.7 (2025-03-30)
Copyright (C) 2025 Dimitris Panokostas

Desktop (please complete the following information):

• OS: Debian/trixie

Additional context

• OS: Debian testing/trixie, using Sway version 1.10.1 under Wayland 1.23.1, xwayland 2:24.1.5 (Xwayland enabled)
• Amiberry tested versions: 7.0.7 (Debian Bookworm package)

Please don't tell me that Debian trixie is not supported ;-)

Thanks!

[midwan]

Thanks for noticing this, I had missed it.