added not found errors to be used by organization providers

lib/Events/RegisterOrganizationProviderEvent.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\OrganizationFolders\Events;
+
+use OCP\EventDispatcher\Event;
+
+use OCA\OrganizationFolders\OrganizationProvider\OrganizationProviderManager;
+
+/**
+ * This event is triggered during the initialization of Organization Folders.
+ */
+class RegisterOrganizationProviderEvent extends Event {
+
+	/** @var OrganizationProviderManager */
+	private $organizationProviderManager;
+
+	public function __construct(OrganizationProviderManager $organizationProviderManager) {
+		parent::__construct();
+		$this->organizationProviderManager = $organizationProviderManager;
+	}
+
+	public function getOrganizationProviderManager(): OrganizationProviderManager {
+		return $this->organizationProviderManager;
+	}
+}