feat: add i18n support with 6 languages (en, tr, krd, ar, fa, ckb)

- Add translation system with useTranslation hook and LanguageProvider
- Auto-detect language from Telegram user settings
- Update all components and sections to use translation keys
- Support English, Turkish, Kurdish, Arabic, Persian, Sorani

src/components/LoadingScreen.tsx

@@ -1,10 +1,13 @@
 import { Loader2 } from 'lucide-react';
+import { useTranslation } from '@/i18n';
 
 interface LoadingScreenProps {
   message?: string;
 }
 
-export function LoadingScreen({ message = 'Tê barkirin...' }: LoadingScreenProps) {
+export function LoadingScreen({ message }: LoadingScreenProps) {
+  const { t } = useTranslation();
+  const displayMessage = message ?? t('loadingScreen.loading');
   return (
     <div className="flex flex-col items-center justify-center min-h-screen bg-background">
       <div className="relative">
@@ -12,7 +15,7 @@ export function LoadingScreen({ message = 'Tê barkirin...' }: LoadingScreenProp
           <Loader2 className="w-8 h-8 text-primary animate-spin" />
         </div>
       </div>
-      <p className="mt-4 text-sm text-muted-foreground">{message}</p>
+      <p className="mt-4 text-sm text-muted-foreground">{displayMessage}</p>
     </div>
   );
 }