feat(WEB-128): desktop and mobile initial wireframe implemented

components/MyPages/Header/User/index.tsx

@@ -0,0 +1,10 @@
+import styles from "./user.module.css"
+
+export default function User() {
+  return (
+    <div className={styles.user}>
+      FK
+      <span className={styles.alert}>1</span>
+    </div>
+  )
+}