command: make --verbose/--quiet available to all subcommands

Add new CommonOptions entry points to move the existing --jobs to,
and relocate all --verbose/--quiet options to that.  This provides
both a consistent interface for users as well as for code.

Change-Id: Ifaf83b88872421f4749b073c472b4a67ca6c0437
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/303224


Reviewed-by: Raman Tenneti <rtenneti@google.com>
Tested-by: Mike Frysinger <vapier@google.com>