feat: add sitemap (#329)

Co-authored-by: Krish Gupta <xkrishguptaa@gmail.com>

Author: ctrl07

src/app/sitemap.js

@@ -0,0 +1,10 @@
+export default function sitemap() {
+  return [
+    {
+      url: 'https://eddiehub.org',
+      lastModified: new Date(),
+      changeFrequency: 'monthly',
+      priority: 1,
+    },
+  ]
+}