feat(rules): support array for scope-case and type-case

[SimeonC]

Description

I've changed the scope-case and type-case rules to follow the same option for providing arrays in the rule value as is used in subject-case. Additionally, I've added tests to all 3 rules to check for this use case.

Motivation and Context

As outlined in #307 it's really useful to be able to use a mixture of scope casing types when you use file/folder names as the scope.

Usage examples

This is my specific use case.

// commitlint.config.js
module.exports = {
  extends: ['@commitlint/config-conventional'],
  rules: {
    'scope-case': [2, 'always', ['camel-case', 'pascal-case', 'lower-case']]
  }
};

echo "fix(someFunctionUtil): " | commitlint # passes
echo "fix(ReactComponent): " | commitlint # passes
echo "fix(ERROR): " | commitlint # fails

How Has This Been Tested?

Added test suites that passed under subject-case, then copy/tweaked them to the other files to check that they all worked in the same way.

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• My change requires a change to the documentation. (Does this need documentation? or is the subject-case docs missing this feature?)
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[SimeonC]

@marionebl sorry to bug you, any chance of getting this merged/reviewed anytime soon?

[marionebl]

Will have a look at this tomorrow, thanks for your patience!

[marceloavf]

@SimeonC I don't think you need to update documentation since it already show an example with array

[marionebl]

Thanks for your patience people, merging this.

[marionebl]

Released via 6.2.0