Better documentDriven configuration

[Tahul]

Following this issue:
nuxt/nuxt.com#798

What is Expected?

In addition to being able to toggle documentDriven feature scopes via definePageMeta, I think we should also handle string parameters as this:

definePageMeta({
   page: '/my-page-path',
   surround: '/my-surround-path'
})

What is actually happening?

We can only toggle the feature with booleans.

[atinux]

What about supporting the QueryBuilder object as well?

[Tahul]

Let's do both! 😁