(Add) Use shouldSend for notifications

[Obi-Wana]

Use shouldSend for notifications.

[what-the-diff]

PR Summary

• Improved Notification Decision Making in TorrentHelper.php
  Adjusted method to make a smarter choice on whether to send notifications to followers.
• Refined NewUpload notification class
  • Tweaked a method to decide whether to use the database as the notification channel, depending on certain rules.
  • Added a new method to handle the decision if a notification should be sent by checking different parameters such as relationship between sender and receiver, notification blocking options, and specific notification settings.