feat: implement news details page with content and sidebar

app/components/BackToTop.tsx

@@ -0,0 +1,7 @@
+export default function BackToTop() {
+    return (
+        <button id="back-top" className="back-to-top show">
+            <i className="fa-regular fa-arrow-up"></i>
+        </button>
+    );
+}