Issue #3526558 by sanduhrs: Add webhook_type mapping operation

modules/webhook/src/Hook/WebhookHooks.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\webhooks\Hook;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Hook\Attribute\Hook;
+use Drupal\Core\Url;
+use Drupal\webhook\Entity\WebhookType;
+
+/**
+ * Hook implementations for webhooks module.
+ */
+class WebhookHooks {
+
+  /**
+   * Implements hook_entity_operation().
+   */
+  #[Hook('entity_operation')]
+  public function entityOperation(EntityInterface $entity): array {
+    $operations = [];
+    if ($entity instanceof WebhookType) {
+      $operations['mapping'] = [
+        'title' => t('Mapping'),
+        'url' => Url::fromRoute('webhook.webhook_type.field_mapping', ['webhook_type' => $entity->id()]),
+        'weight' => 50,
+      ];
+    }
+    return $operations;
+  }
+
+}