feat(citation): move to message renderer

src/components/MessageRenderer/Citation.tsx

@@ -0,0 +1,19 @@
+const Citation = ({
+  href,
+  children,
+}: {
+  href: string;
+  children: React.ReactNode;
+}) => {
+  return (
+    <a
+      href={href}
+      target="_blank"
+      className="bg-light-secondary dark:bg-dark-secondary px-1 rounded ml-1 no-underline text-xs text-black/70 dark:text-white/70 relative"
+    >
+      {children}
+    </a>
+  );
+};
+
+export default Citation;