Reduced json report output - only failing scores

[BioPhoton]

User story

As a user of the CLI I want to have meaningful JSON output.

The current JSON report includes categories if given as well audits. Especially in configurations with a lot of audits the JSON report is polluted with passing audits and categories. This makes it hard to find the important data and consume it.

The JSON report should only show failing audits and categories.

Acceptance criteria

• by default the terminal report should only show failing categories and audits
• if the flag --reporting.detailed is passed we include all audits and categories. Also passing ones.

Implementation details

No response

[vmasek]

Closing as reduced JSON reporters are not planned ATM (unlike support for custom reporters that should be added in)