Serve apple pay verification directly

[jimmyn]

Instead of storing the file within the module, we should serve /.well-known/apple-developer-merchantid-domain-association by fetching the content directly from https://assets.monei.com/apple-pay/apple-developer-merchantid-domain-association/. This approach eliminates the need to update the file whenever the certificate is rotated.

Check https://github.com/MONEI/MONEI-AdobeCommerce-Magento2/blob/main/Plugin/ApplePayVerification.php