Feed pagination data directly instead of using a string that points to the data

[zachleat]

Loved this example from @coderophi678 on issue #462. Seems like a cool thing to me:

const testData = require("./_data/testData.json");

class TestPage {
  data() {
    return {
      layout: "base",
      pagination: {
        data: testData,
        size: 1
      }
    };
  }
  render(data) {
    return `{...}`;
  }
}

module.exports = TestPage;

[zachleat]

Also a shout out to https://www.11ty.dev/docs/data-frontmatter/#java-script-front-matter