refresh application on iOS simulator with notification

Is your feature request related to a problem? Please describe.
Currently CLI refreshes the application on iOS device as sending a RefreshRequest notification.
If the application is running on device, it posts back a AppRefreshStarted notification. This way CLI knows that the application can be refreshed and doesn't restart it.
If the application is not running on device, CLI doesn't receive AppRefreshStarted notification. CLI waits for this notification 5 seconds and if no response is received, it restarts the application.

The same workflow should be implemented for iOS simulator as well.

Currently we have a mechanism to post a notification to iOS simulator. The problem is that no response is posted back to the CLI.

Inizia da lib/iphone-simulator-xcode-simctl.ts, nel meccanismo di notifica collegato nell’issue, quindi segui il modo in cui la CLI gestisce RefreshRequest e AppRefreshStarted per i dispositivi. Implementa il workflow corrispondente della risposta del simulatore e verifica che la CLI sappia distinguere un’applicazione in esecuzione da una che deve essere riavviata.