add smtp

Controller:

github.com/raghavyuva/nixopus-api/internal/features/notification/controller.(*NotificationController).AddSmtp

Middlewares:

• github.com/go-fuego/fuego.defaultLogger.middleware
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).SetupRoutes.(*Router).setupAuthentication.func2
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).applyMiddleware.func2