feat: FAQ overview element on TYPO3 13

Restored from a46918d (the FAQ page /skireisen/infos/allgemeine-infos/faqs/);
markup matches TYPO3 10.

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

packages/ep_theme/Configuration/TypoScript/ContentElements/faq_overview.typoscript

@@ -0,0 +1,17 @@
+tt_content.faq_overview =< lib.contentElement
+tt_content.faq_overview {
+    templateName = FaqOverview
+    settings {
+        infoPageUid = {$plugin.tx_eptheme.settings.infoPageUid}
+    }
+    dataProcessing {
+        10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
+        10 {
+            table = tx_epproducts_domain_model_faq
+            where = category != ''
+            orderBy = category ASC, uid ASC
+            pidInList = {$plugin.tx_epproducts.settings.faqsStoragePid}
+            as = faqs
+        }
+    }
+}