feat: adds step to define filter in getting started process

src/User/Database/CountryLanguages.php

@@ -137,4 +137,13 @@ class CountryLanguages
 
         return $countryLanguages[$countryName] ?? null;
     }
+
+    public static function asSelectOptions(): array
+    {
+        $result = [];
+        foreach (static::$languages as $language) {
+            $result[$language] = $language;
+        }
+        return $result;
+    }
 }