Integrate email notifications into signup and login (#38)

backend/product/app/runtime/bootstrap.go

@@ -83,6 +83,7 @@ func (a *APIImp) installRuntimeBasics(
 		a.config.Mw,
 		a.config.AuthStorage,
 		debug,
+		a.config.Notifications,
 	); err != nil {
 		a.logger.Error("Failed to create middleware", zap.Error(err))
 		return err