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/Resources/Private/Partials/Region/Webcam.html

@@ -12,11 +12,8 @@
                data-action="lightbox#open"
                data-lightbox-caption="Webcam {region.name}"
                title="Webcam {region.name}">
-                <f:image src="{region.webcam.url}"
-                         loading="lazy"
-                         class="block w-full h-auto"
-                         width="330"
-                         alt="Webcam {region.name}" />
+                <f:comment>External image: f:image only resolves FAL files since TYPO3 12</f:comment>
+                <img class="block w-full h-auto" alt="Webcam {region.name}" loading="lazy" src="{region.webcam.url}" width="330" />
             </a>
         </div>
     </f:if>