Export the Options interface

[cshouts-tasc]

Export the Options interface so developers can define a constant of type Options.

i.e.

const A11Y_OPTIONS: Options = {
    runOnly: {
      type: 'tags',
      values: ['wcag2a', 'wcag2aa'],
    },
  };```

[github-actions]

🎉 This PR is included in version 0.12.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀