Add emailer helper class

[eonist]

#if os(iOS)
import Foundation
import UIKit
/**
 * - Fixme: ⚠️️ Add for macOS as well? or is it supported as is?
 */
public class Emailer {
//   public typealias MailInitiator = UIViewController & MFMailComposeViewController
   /**
    * - Fixme: ⚠️️ Add example
    * - Parameters:
    *   - viewController: the mail vc
    *   - text: text to mail
    *   - recipient: "address@example.com"
    */
   public static func sendMail(on viewController: UIViewController/*MFMailComposeViewController*/, text: String, recipient: String) -> UIAlertAction {
      fatalError("Out of order") // - Fixme: ⚠️️ requires testing
//      UIAlertAction(title: "Send Email", style: .default) {
//         (_: UIAlertAction) in
//         DispatchQueue.main.async {
//            if MFMailComposeViewController.canSendMail() {
//               let composeVC = MFMailComposeViewController()
//               composeVC.mailComposeDelegate = viewController
//               composeVC.setToRecipients([recipient])
//               composeVC.setSubject("Console Log")
//               composeVC.setMessageBody(text, isHTML: false)
//               viewController.present(composeVC, animated: true, completion: nil)
//            } else {
//               let alert = UIAlertController(title: "Email account required",
//                                             message: "Please configure an email account in Mail",
//                                             preferredStyle: .alert)
//               alert.addAction(UIAlertAction.init(title: "OK", style: .default))
//               viewController.present(alert, animated: true, completion: nil)
//            }
//         }
//      }
   }
}
#endif