feat: add page title metadata to layout

- Add title: 'rezije.app' to metadata in layout
- Sets browser tab title for all pages across the application
- Applies to all locales (Croatian and English)

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/[locale]/layout.tsx

@@ -4,6 +4,7 @@ import { Metadata } from 'next';
 import Script from 'next/script';
 
 export const metadata:Metadata = {
+  title: 'rezije.app',
   alternates: {
     canonical: 'https://rezije.app',
     languages: {