added not found errors to be used by organization providers

lib/OrganizationProvider/OrganizationProviderManager.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\OrganizationFolders\OrganizationProvider;
+
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\Server;
+
+use OCA\OrganizationFolders\Events\RegisterOrganizationProviderEvent;
+
+class OrganizationProviderManager {
+	private array $organizationProviders = [];
+
+	public function __construct(
+		IEventDispatcher $dispatcher,
+	) {
+		$event = new RegisterOrganizationProviderEvent($this);
+		$dispatcher->dispatchTyped($event);
+	}
+
+	/**
+	 * @return OrganizationProvider[]
+	 */
+	public function getOrganizationProviders(): array {
+		return $this->organizationProviders;
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function hasOrganizationProvider($id): bool {
+		return array_key_exists($id, $this->organizationProviders);
+	}
+
+	/**
+	 * @return OrganizationProvider
+	 */
+	public function getOrganizationProvider($id): ?OrganizationProvider {
+		return $this->organizationProviders[$id];
+	}
+
+	public function registerOrganizationProvider(OrganizationProvider $organizationProvider): self {
+		$this->organizationProviders[$organizationProvider->getId()] = $organizationProvider;
+		return $this;
+	}
+}