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.

從 issue 中連結的通知機制所在的 lib/iphone-simulator-xcode-simctl.ts 開始，接著追蹤 CLI 如何為裝置處理 RefreshRequest 和 AppRefreshStarted。實作相應的 simulator 回應工作流程，並驗證 CLI 能夠區分正在執行的應用程式和必須重新啟動的應用程式。