feat/59 cmd implement version flag

[deepu9]

Closes #59

Cobra Command struct comes with Version field. Once the version field is set, we have a version(-v or --version) flag. See attached screenshot.

[kbdharun]

Thanks for your contribution, while this implementation is fine this introduces inconsistency between main.go (which is outdated) and this one, so I would suggest fixing the version in the main.go and then updating this to get the version from there.

[deepu9]

Thanks for your contribution, while this implementation is fine this introduces inconsistency between main.go (which is outdated) and this one, so I would suggest fixing the version in the main.go and then updating this to get the version from there.

You mean like the one in Ikaros package.
https://github.com/Vanilla-OS/Ikaros/blob/main/cmd/root.go

https://github.com/Vanilla-OS/Ikaros/blob/main/main.go

I'll create a new PR for it. I'll also update sub-command options.