Simple Rust application to manage notifications.

TODO:

• use app configurations
• add DB layer
• containerize DB
• handle errors
• add informative logs
• integrate with notification platform - probably SNS via Docker
  • to create notifications
  • to send notifications
• documentation
• code coverage - cargo-tarpaulin
• integration tests

Improvements:

• add user domain

  • restrict notifications based on user
  • manage user authentication

• small refactors