Restore missing version commands

[Shikachuu]

What I did

• Removed the hidden flag from the version command, since by default and for historical reasons aswell it shouldn't be hidden.
• Since the documentation for the v2 still constantly reffering to a --version flag on the root command, I added it aswell.
  (This is up for a discuisson, since I think this change shouldn't be exist and we have to correct the documentation.)
  (If we are still planning to keep this change, I think it could be done more elegantly.
  I did it aswell, since I forgot that the old python version also handle the -v flag next to --version)

Related issue
Fix #8729

A picture of a cute animal, if possible in relation with what you did
(A hiding cat, reffering to the hidden version command.)

[ndeloof]

Removed the hidden flag from the version command

:+1, I didn't noticed we kept this one hidden, this was a mistake

Since the documentation for the v2 still constantly reffering to a --version flag on the root command

I'm fine we introduce --version as this as low impact but documentation should be fixed as well.
Maybe this flag should be mark hidden so we encourage use of the explicit version command?

[Shikachuu]

Removed the hidden flag from the version command

:+1, I didn't noticed we kept this one hidden, this was a mistake

Since the documentation for the v2 still constantly reffering to a --version flag on the root command

I'm fine we introduce --version as this as low impact but documentation should be fixed as well. Maybe this flag should be mark hidden so we encourage use of the explicit version command?

I think hiding this would be a nice idea, I'll add the change soon.
Besides that, everything else looks okay?

[ndeloof]

All good for me
Some of your commits are not signed-off. Maybe you could also squash all of them into a single one

[mat007]

Thanks!

[Shikachuu]

Thanks for the reviews!
Sorry I hade to do some acrobatic manovers with rebase, but now all commits squashed to one and signed-off. 😆