Please describe your feature request

currently we have --pager option as a sub-command for several commands including new features #1210 and #1211 for adding paging support for buildtest history and buildtest inspect.

Let's create a top-level option buildtest --pager and remove the options in each subcommand.

Post question in Slack

• I agree that I posted my question in slack before creating this issue

Is there an existing issue

• I confirm there is no existing issue for this issue