This endpoint is used to initialize the Login With WhatsApp Session. API Response provides a unique session id,
URL to be embedded behind 'Login With Whatsapp' button ( For App interfaces ) URL to QR code URL ( for Web interfaces )If you're adding a 'Login With WhatsApp' button to your website's desktop/laptop interface, we suggest displaying a QR code to the user. You can use the <img>
tag to show the QR code URL.