Add 8 major languages (LTR only)

Added languages:
- pt-BR: Português (Brasil) - 250M+ speakers
- ru: Русский - 260M+ speakers
- uk: Українська - 40M+ speakers
- it: Italiano - 67M speakers
- hi: हिन्दी - 600M+ speakers
- vi: Tiếng Việt - 95M speakers
- tr: Türkçe - 80M speakers
- pl: Polski - 45M speakers

Total supported languages: 16
RTL languages (Arabic, Hebrew, etc.) excluded for now,
as they require additional layout implementation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/app/Http/Middleware/SetLocale.php

@@ -11,7 +11,7 @@
 class SetLocale
 {
     /**
-     * Supported locales
+     * Supported locales (LTR languages only)
      */
     public const SUPPORTED_LOCALES = [
         'en' => 'English',
@@ -19,6 +19,14 @@ class SetLocale
         'de' => 'Deutsch',
         'fr' => 'Français',
         'es' => 'Español',
+        'pt-BR' => 'Português (Brasil)',
+        'ru' => 'Русский',
+        'uk' => 'Українська',
+        'it' => 'Italiano',
+        'hi' => 'हिन्दी',
+        'vi' => 'Tiếng Việt',
+        'tr' => 'Türkçe',
+        'pl' => 'Polski',
         'zh-CN' => '简体中文',
         'zh-TW' => '繁體中文',
         'ko' => '한국어',