Issue #3507935 by tr: Add typing to VotingApiWidgets plugins and manager

Closes #3507935

src/Plugin/VotingApiWidget/FiveStarWidget.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\votingapi_widgets\Plugin\VotingApiWidget;
 
 use Drupal\Core\StringTranslation\StringTranslationTrait;
@@ -27,7 +29,7 @@ class FiveStarWidget extends VotingApiWidgetBase {
   /**
    * Vote form.
    */
-  public function buildForm($entity_type, $entity_bundle, $entity_id, $vote_type, $field_name, $settings) {
+  public function buildForm(string $entity_type, string $entity_bundle, string|int $entity_id, string $vote_type, string $field_name, array $settings): array {
     $form = $this->getForm($entity_type, $entity_bundle, $entity_id, $vote_type, $field_name, $settings);
     $build = [
       'rating' => [
@@ -68,7 +70,7 @@ class FiveStarWidget extends VotingApiWidgetBase {
   /**
    * {@inheritdoc}
    */
-  public function getStyles() {
+  public function getStyles(): array {
     return [
       'default' => $this->t('Default'),
       'bars-horizontal' => $this->t('Bars horizontal'),