refactor: Update baseUrl imports and layout metadata

- Replaced imports of baseUrl from '@/lib/metadata' to '@/app/sitemap' across multiple files for consistency.
- Adjusted the layout metadata to ensure the default title and template are correctly formatted.
- Enhanced the structure of the metadataBase by converting baseUrl to a URL object.

src/app/(routes)/rss/route.ts

@@ -1,5 +1,5 @@
+import { baseUrl } from '@/app/sitemap';
 import { getBlogPosts } from '@/lib/blog';
-import { baseUrl } from '@/lib/metadata';
 
 export async function GET() {
   const allBlogs = await getBlogPosts();

src/app/(site)/blog/[slug]/page.tsx

@@ -1,8 +1,8 @@
 import { notFound } from 'next/navigation';
 
+import { baseUrl } from '@/app/sitemap';
 import { CustomMDX } from '@/components/core/blog/mdx';
 import { formatDate, getBlogPosts } from '@/lib/blog';
-import { baseUrl } from '@/lib/metadata';
 
 export async function generateStaticParams() {
   const posts = getBlogPosts();

src/app/layout.tsx

@@ -3,11 +3,11 @@ import './globals.css';
 import localFont from 'next/font/local';
 import { ViewTransitions } from 'next-view-transitions';
 
+import { baseUrl } from '@/app/sitemap';
 import Footer from '@/components/layout/footer';
 import { Navbar } from '@/components/layout/nav';
 import { Providers } from '@/components/providers';
 import { createMetadata } from '@/lib/metadata';
-import { baseUrl } from '@/lib/metadata';
 
 const geistSans = localFont({
   src: './fonts/GeistVF.woff',
@@ -46,9 +46,9 @@ export default function RootLayout({
 
 export const metadata = createMetadata({
   title: {
-    template: '%s | perc.dev',
-    default: 'perc.dev'
+    default: 'perc.dev',
+    template: '%s | perc.dev'
   },
   description: 'Welcome to my portfolio!',
-  metadataBase: baseUrl
+  metadataBase: new URL(baseUrl)
 });

src/app/robots.ts

@@ -1,4 +1,4 @@
-import { baseUrl } from '@/lib/metadata';
+import { baseUrl } from '@/app/sitemap';
 
 export default function robots() {
   return {