Get_head Yoast meta fields

This release actually contains this work ...

query GetHead {
  post(id: "1", idType: DATABASE_ID) {
    seo {
      fullHead
    }
  }
  category(id: "1", idType: DATABASE_ID) {
    seo {
      fullHead
    }
  }
  user(id: "1", idType: DATABASE_ID) {
    seo {
      fullHead
    }
  }
  seo {
    contentTypes {
      post {
        archive {
          fullHead
        }
      }
    }
  }
}