feat(webhook_listeners): Add mapper method to remove all registrations from a given AppAPI id

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

apps/webhook_listeners/lib/Db/WebhookListenerMapper.php

@@ -159,6 +159,21 @@ class WebhookListenerMapper extends QBMapper {
 		return ($qb->executeStatement() > 0);
 	}
 
+	/**
+	 * Delete all registrations made by the given appId
+	 *
+	 * @throws Exception
+	 * @return int number of registration deleted
+	 */
+	public function deleteByAppId(string $appId): int {
+		$qb = $this->db->getQueryBuilder();
+
+		$qb->delete($this->getTableName())
+			->where($qb->expr()->eq('app_id', $qb->createNamedParameter($appId, IQueryBuilder::PARAM_STR)));
+
+		return $qb->executeStatement();
+	}
+
 	/**
 	 * @throws Exception
 	 * @return list<string>