Add internal cronjob for PHP session cleanup

app/cron/SessionCleanup.php

@@ -0,0 +1,20 @@
+<?php
+declare(strict_types=1);
+
+namespace Mcp\Cron;
+
+class SessionCleanup extends CronJob
+{
+    public function __construct(\Mcp\Mcp $app)
+    {
+        parent::__construct($app, Frequency::HOURLY);
+    }
+
+    public function run(): bool
+    {
+        error_log("Session GC");
+        session_start();
+        session_gc();
+        return true;
+    }
+}