Added hook_webform_handler_invoke_alter() and hook_webform_handler_invoke_METHOD_NAME_alter()

Added hook_webform_handler_invoke_alter() and hook_webform_handler_invoke_METHOD_NAME_alter()

/**
 * Act on a webform handler when a method is invoked.
 *
 * Allows module developers to implement custom logic that can executed before
 * any webform handler method is invoked.
 *
 * This hook can be used to…
 * - Conditionally enable or disable a handler.
 * - Alter a handler's configuration.
 * - Preprocess submission data being passed to a webform handler.
 *
 * @param \Drupal\webform\Plugin\WebformHandlerInterface $handler
 *   A webform handler attached to a webform
 * @param $method_name
 *   The invoked method name converted to snake case.
 * @param array $args
 *   Argument being passed to the handler's method.
 *
 * @see \Drupal\webform\Plugin\WebformHandlerInterface
 */
function webform_test_handler_invoke_alter_webform_handler_invoke_alter(\Drupal\webform\Plugin\WebformHandlerInterface $handler, $method_name, array &$args) {
  $webform = $handler->getWebform();
  $webform_submission = $handler->getWebformSubmission();

  $webform_id = $handler->getWebform()->id();
  $handler_id = $handler->getHandlerId();
  $state = $webform_submission->getState();
}

/**
 * Act on a webform handler when a specific method is invoked.
 *
 * Allows module developers to implement custom logic that can executed before
 * a specified webform handler method is invoked.
 *
 * This hook can be used to…
 * - Conditionally enable or disable a handler.
 * - Alter a handler's configuration.
 * - Preprocess submission data being passed to a webform handler.
 *
 * @param \Drupal\webform\Plugin\WebformHandlerInterface $handler
 *   A webform handler attached to a webform
 * @param array $args
 *   Argument being passed to the handler's method.
 *
 * @see \Drupal\webform\Plugin\WebformHandlerInterface
 */
function hook_webform_handler_invoke_METHOD_NAME_alter(\Drupal\webform\Plugin\WebformHandlerInterface $handler, array &$args) {
  $webform = $handler->getWebform();
  $webform_submission = $handler->getWebformSubmission();

  $webform_id = $handler->getWebform()->id();
  $handler_id = $handler->getHandlerId();
  $state = $webform_submission->getState();
}