feat(app): implement state in order to not flood of notification during run

src/actors/driving/cron_alerts.rs

@@ -10,7 +10,7 @@ impl CronAlertsActor {
         Self { alert_monitor, period }
     }
 
-    pub fn start(&self) {
+    pub fn start(&mut self) {
         loop {
             if let Err(e) = self.alert_monitor.alert_on_threshold_violation() {
                 eprintln!("Error occurred: {}", e);