Theme table with pager - Drupal 8

public function nodeList() {
    $header = [
      'Nid',
      'Title',
    ];
    $query = \Drupal::database()->select('node', 'n');
    $query->fields('n', ['nid']);
    $pager = $query->extend('Drupal\Core\Database\Query\PagerSelectExtender')->limit(10);
    $results = $pager->execute()->fetchAll();

    foreach ($results as $key => $result) {
      $node = Node::load($result->nid);
      $row = [];
      $row = [
        'nid' => $node->id(),
        'title' => $node->getTitle(),
      ];
      $rows[] = $row;
    }
    $build['table_data'] = [
      '#type' => 'table',
      '#header' => $header,
      '#rows' => $rows,
    ];
    // Finally add the pager.
    $build['pager'] = array(
      '#type' => 'pager'
    );

    return $build;
  }