feat: add videodb media index with Docker stack

- Add videodb PHP/MySQL media collection manager (Blu-ray, DVD, CD)
- Dockerfile: PHP 8.1 + Apache with GD/mysqli/exif extensions
- docker-compose.yml: app on port 6761 + MySQL 8.0 with health checks
- docker-entrypoint.sh: auto-generates config.inc.php from env vars,
  waits for MySQL, initializes DB schema idempotently
- init-db.php: CLI schema installer using app's own prefix_query() logic
- Persistent volumes for DB, cache, and cover images

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

videodb/test/test_isohunt.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * test_isohunt.php
+ *
+ * isohunt.com images engine test case
+ *
+ * @package Test
+ * @author Andreas Götz <cpuidle@gmx.de>
+ * @version $Id: test_isohunt.php,v 1.2 2013/02/02 11:38:59 andig2 Exp $
+ */
+
+require_once './core/functions.php';
+require_once './engines/engines.php';
+
+class TestIsoHunt extends UnitTestCase
+{
+    function TestIsoHunt()
+    {
+        parent::__construct();
+    }
+    
+    function testSearch()
+    {
+        $id = 'Grey\'s Anatomy';
+        
+        $data = engineSearch($id, 'isohunt');
+        #$this->assertNoErrors();
+        $this->assertTrue(sizeof($data) >= 1);
+        
+#       dump($data);
+    }
+}
+
+?>