Add italian localization

- Added it locale
- Add it language ro other config files (nginx.conf, vite.config.ts, i18n.ts)

vite.config.ts

@@ -14,7 +14,7 @@ function pagesRewritePlugin(): Plugin {
       server.middlewares.use((req, res, next) => {
         const url = req.url?.split('?')[0] || '';
 
-        const langMatch = url.match(/^\/(en|de|zh|vi)(\/.*)?$/);
+        const langMatch = url.match(/^\/(en|de|zh|vi|it)(\/.*)?$/);
         if (langMatch) {
           const lang = langMatch[1];
           const restOfPath = langMatch[2] || '/';