chore(cli): set version for root

[cfabianski]

Description

Setting the version will automatically enable bearer --version.
I found it particularly annoying/confusing in some occasions to not have it available.

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https://github.com/spf13/cobra/blob/main/site/content/user_guide.md#version-flag

Cobra adds a top-level '--version' flag if the Version field is set on the root command. Running an application with the '--version' flag will print the version to stdout using the version template. The template can be customized using the cmd.SetVersionTemplate(s string) function.

Checklist

• I've added test coverage that shows my fix or feature works as expected.
• I've updated or added documentation if required.
• I've included usage information in the description if CLI behavior was updated or added.
• PR title follows Conventional Commits format

[gotbadger]

This would basically mean we have 2 versions of the version command. I dont think we should do this. Maybe we could talk about it.

[didroe]

❤️

[cfabianski]

This would basically mean we have 2 versions of the version command. I dont think we should do this. Maybe we could talk about it.

Well I agree it's not ideal to have 2 ways to show the version. IMO the bearer version isn't good / standard (I often got caught by it myself). It only exists because we had not implemented it correctly in the first place.
The only reason I hadn't removed the previous way as part of this PR was to be backward compatible but I would have removed it. Do you think I should do it?

[gotbadger]

Bearer command structure is modelled after tools like docker which use this patten. So its not right to say its implmented incorrectly. It just is implemented like that :)

Guess its not harmful so up to you