Capture email button

The ButtonCaptureEmail component is designed to capture user emails, making it ideal for waitlists, newsletter signups, or early access registrations.

• Email input field – Collects user email addresses securely.

• API integration – Sends email submissions to /capture-email API route.

• Loading & disabled states – Prevents duplicate submissions and enhances user experience. Only stores email address once.

• Success feedback – Displays a confirmation message using react-hot-toast upon successful submission.