fix: render product detail pages on TYPO3 13

- ObjectManager replaced by GeneralUtility::makeInstance(), the
  services fetched that way are public
- QueryBuilder::add('orderBy') and the remaining execute() calls,
  detailAction returns a response
- PHP 8 warnings for missing array keys (same values as on PHP 7.4)
- Webcam images are external URLs: plain img tag, f:image only takes
  FAL files
- typo3_encore 7 needs the PKG:ssch/typo3-encore: prefix and
  external = 1 so TYPO3's path check does not drop the entry
- CDN image rewriting as a middleware instead of EXT:replacer, which
  is not PHP 8.5 clean; same pattern, only for page responses
- vhs 8 for the ViewHelpers the templates use
- OpenGraph meta tag manager skips the backend
- myEpUrl with trailing slash as in production

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/ep_theme/Configuration/RequestMiddlewares.php

@@ -0,0 +1,12 @@
+<?php
+
+return [
+    'frontend' => [
+        'ep/cdn-images' => [
+            'target' => \EP\EpTheme\Middleware\CdnImageMiddleware::class,
+            'after' => [
+                'typo3/cms-frontend/page-resolver',
+            ],
+        ],
+    ],
+];