Feature request: Add a common output format option to CLI arguments

[sakojun]

Please add a common output formatting options to the command line.
Like the AWS CLI for example. https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-output-format.html
Otherwise it is difficult to retrieve only the necessary lines, necessary elements, etc.

At a minimum, we want plain text and json.
(json can be processed with jq, plain text can be processed with grep and cut)

It would be better to have options equivalent to filter and query in aws cli, but at least the formatting options can be substituted.