WIP: feat(cli): add verbose option #606

[escapedcat]

Adding --verbose option.

Description

Surpressing output on valid commits unless there are warnings.

Motivation and Context

#606

Usage examples

commitlint --verbose

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[escapedcat]

I didn't add any tests yet. Let me know what you think. If this is ok I'll add tests for this.

[byCedric]

Oh yeah I see, we need to do some test refactoring for this one 😄 I can help with that if necessary.

[byCedric]

Just as a random thought, should this be considered a breaking change?

[escapedcat]

@byCedric I'll find some time to adjust the tests. Just wanted your pre-approval first :)
And yes, might be breaking. I can imagine there are some users out there who use the valid-output in some way :)

[marionebl]

Approved on the feature as proposed, let's do some tests and bring this in