Add MDConcLanguages

src/MDConcLanguages.php

@@ -0,0 +1,19 @@
+<?PHP
+/**
+ * Constains lists for grouping languages.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Provides lists for categorizing spelled out languages.
+ */
+final class MDConcLanguages {
+
+    const LANGUAGES_LIST = [
+        'Deutsch' => 'de',
+        'German' => 'de',
+    ];
+
+}