doc: JSDoc header documentation for Profile component (#242)

## Description
Added JSDoc header documentation that describes the Profile component's
purpose and export


## Related Issue
Resolves [#214](#214)

Co-authored-by: Olabode Lawal-Shittabey <babblebey@gmail.com>

Author: FabianEilts

src/components/islands/profile.jsx

@@ -1,3 +1,8 @@
+/**
+ * Profile Component - User Authentication and Menu
+ * @exports Profile - Main profile component that handles user authentication state and dropdown menu
+ */
+
 import { useState } from "react";
 
 /**