missing `--version` option

[Adam-it]

Description

It would be cool to introduce a -v, --version option besides the -h, --help option to identify the tool version.
Besides, it is mentioned in the bug issue template to use it to get the tool version 😉

Use case

This option could be just useful to get the tool version.
Also it does not need to be an opion but it could be just a different command like spfx version

Alternatives considered

We could just run npm list -g --depth=0 and check the package version there

Additional context

No response

[Adam-it]

if possible I am fine with contributing

[nick-pape]

This would be nice to have and is straightforward. Simply register a new action here, that action would just print the version from package.json (similar to how we get the api version here).

[Adam-it]

Yep. I think Charley Peng (@chid) already created a PR for that without confirmation, so no need to duplicate work. Will pick some different issue 👍
But it's good we agreed that it's needed 🙂

[chid]

yeah I figured it was pretty straightforward - and it works as Nick Pape (@nick-pape) proposes above and the only question was around the ordering of -h and -v, display and whether it shows up on the --help page (or even whether to update it like pnpm, e.g. pnpm [ -h | --help | -v | --version ])

Last thing I noticed reading the docs, was that I'm meant to submit a change log.

Let me know if that's needed and I can put a simple one in. #243