added semaphore factory interface

Author: transistive

src/Contracts/SemaphoreFactoryInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the Neo4j PHP Client and Driver package.
+ *
+ * (c) Nagels <https://nagels.tech>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Laudis\Neo4j\Contracts;
+
+use Laudis\Neo4j\Databags\DriverConfiguration;
+use Psr\Http\Message\UriInterface;
+
+interface SemaphoreFactoryInterface
+{
+    public function create(UriInterface $uri, DriverConfiguration $config): SemaphoreInterface;
+}