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You are designing a notification system that sends messages through different channels. The system should support multiple types of notifications while ensuring all notifications follow a common structure.

• Every notification must have a recipient (who receives the message).

• Every notification must have a message body.

• Each notification type must have a send() method that prints a formatted message to the console.

• Different types of notifications format their messages differently:

  EmailNotification should print:

  1 2 3

  Sending Email to user@example.com: Subject: Important Update Body: "You've got mail!"

  SMSNotification should print:

  1 2	Sending SMS to +1234567890: Message: "New message received!"

  PushNotification should print:

  1 2	Sending Push Notification to user123: Alert: "Check your app for updates!"

• All notifications should log their delivery after being sent. Example:

  1	Notification sent successfully.

• The system should be easily extendable to support new notification types without modifying existing code.

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Notification email = new EmailNotification("user@example.com", "Important Update", "You've got mail!");
Notification sms = new SMSNotification("+1234567890", "New message received!");
Notification push = new PushNotification("user123", "Check your app for updates!");

email.send();
sms.send();
push.send();

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Sending Email to user@example.com:  
Subject: Important Update  
Body: "You've got mail!"  
Notification sent successfully.

Sending SMS to +1234567890:  
Message: "New message received!"  
Notification sent successfully.

Sending Push Notification to user123:  
Alert: "Check your app for updates!"  
Notification sent successfully.

• Design and implement the Notification structure so that all notifications share common behavior and data.
• Ensure that new notification types can be added without modifying existing code.
• Implement shared functionality (such as logging) in a way that applies to all notifications without duplicating code.