pwd: add -h/-V short flags for help/version

[naoNao89]

This adds -h and -V as short alternatives for --help and --version.

GNU pwd only supports the long forms, but most other uutils accept both.
Having the short flags makes pwd consistent with the rest of the utilities
and more convenient to use.

Changes:

• Added .short('h') and .short('V') to the help/version args
• Updated tests to verify both short and long forms work
• Localization already in place (English & French)

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tail/overlay-headers (fails in this run but passes in the 'main' branch)

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/misc/tee (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/tail/overlay-headers (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/timeout/timeout (passes in this run but fails in the 'main' branch)

[memark]

LGTM

[RenjiSann]

Looking at the GNU pwd source code

Please don't. For licensing reasons, we are not allowed to look at GNU's source code to implement our coreutils.

[sylvestre]

why do you think we should do that ?
i feel that it doesn't bring much to follow GNU here

[naoNao89]

I thought any difference from GNU coreutils was a bug that needed fixing. I now understand uutils aims for compatibility while adding useful extensions when appropriate. I will update this PR to enhance pwd with short flags rather than removing them.

[cakebaker]

Somehow I don't understand what you try to accomplish with this PR. -h and -V already work in main:

$ cargo run -q pwd -V
pwd (uutils coreutils) 0.3.0
$ cargo run -q pwd -h
Display the full filename of the current working directory.

Usage: pwd [OPTION]...

Options:
  -L, --logical   use PWD from environment, even if it contains symlinks
  -P, --physical  avoid all symlinks
  -h, --help      Print help
  -V, --version   Print version

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/timeout/timeout (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/misc/tee (passes in this run but fails in the 'main' branch)

[naoNao89]

-h/-V already work via Clap defaults. This PR makes them explicit, localizes the help/version lines (en/fr), and adds tests to prevent regressions. No user-visible change, it stabilizes intent and i18n.

[cakebaker]

I think we should do the localization of the help/version lines for all utils in the same place. I opened a ticket for it: #8923

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/tail/overlay-headers (passes in this run but fails in the 'main' branch)

[sylvestre]

is it still a draft ? thanks

[sylvestre]

please reopen when it is ready