New sortByString and createSortCollator functions in Drupal\Component\Utility\SortArray

New sortByString and createSortCollator functions in Drupal\Component\Utility\SortArray to introduce a generic sort helper for language-dependent string comparisons using a "natural order" algorithm. If php intl extension is installed it uses Collator::compare(), fallback to strnatcasecmp()

Usage example:

$collator = SortArray::createSortCollator(\Drupal::service('language_manager')->getCurrentLanguage()->getId());
return uasort($list, function ($a, $b) use ($collator) {
  return static::compare($a, $b, $collator);
});

public static function compare(ConfigEntityInterface $a, ConfigEntityInterface $b, ?\Collator $collator): int {
  $a_weight = $a->weight ?? 0;
  $b_weight = $b->weight ?? 0;
  if ($a_weight == $b_weight) {
    $a_label = $a->label() ?? '';
    $b_label = $b->label() ?? '';
    return SortArray::sortByString($a_label, $b_label, $collator);
  }
  return $a_weight <=> $b_weight;
}