[TASK] Add de as TYPO3 language for local environment

Author: einpraegsam

.project/TYPO3/additional.php

@@ -20,6 +20,13 @@
             ],
         ],
     ],
+    'EXTCONF' => [
+        'lang' => [
+            'availableLanguages' => [
+                'de',
+            ],
+        ],
+    ],
     'EXTENSIONS' => [
         'lux' => [
             'anonymizeIp' => '1',