feat: add internationalization support and update layout

- Added i18n module to nuxt.config.ts with English and Traditional Chinese locales.
- Created locale files for English, Traditional Chinese, and German.
- Updated default layout to use script setup syntax.
- Modified index page structure for future content.
- Implemented API endpoint for object storage file redirection.
- Removed unused CORS middleware.
- Created a new feed route handler.

server/api/objectstorage/files/[slug].ts

@@ -0,0 +1,6 @@
+import s3 from "~/server/components/s3";
+
+export default defineEventHandler(async (event) => {
+    const slug = getRouterParam(event, "slug");
+    return sendRedirect(event, `${process.env.S3_ENDPOINT}/${process.env.S3_BUCKETNAME}/${slug}`, 302);
+})

server/routes/feed.json.ts

@@ -0,0 +1,3 @@
+export default defineEventHandler(async () => {
+    
+});