fix: notify for AppRefreshStarted and remove the log for successful refresh request

Currently CLI performs an additional application start when sending refresh notification to the application. The purpose of this additional application start is to ensure that the application will be started when sending the notification no matter if it is currently crashed. However, this additional operation slows down the entire livesync process with around 2-3 seconds per change. The purpose of this PR is to eliminate the delay as posting `AppRefreshStarted` notification from application. CLI starts an observer notification in order to check if the `AppRefreshStarted` will be sent from the application. In case it is sent, CLI refreshes the application via `RefreshRequest` notification. In case a such notification is not sent, CLI restarts the application in 3 seconds (this is the timeout for awaiting the notification from application).

Rel to NativeScript/nativescript-cli#4966

Author: Fatme

src/debugging/TNSDebugging.h

@@ -21,7 +21,6 @@
 
 // {N} CLI is relying on these messages. Please do not change them!
 #define LOG_DEBUGGER_PORT NSLog(@"NativeScript debugger has opened inspector socket on port %d for %@.", currentInspectorPort, [[NSBundle mainBundle] bundleIdentifier])
-#define LOG_SUCCESSFULL_REFRESH NSLog(@"Successfully refreshed the application with RefreshRequest."); notify_post(NOTIFICATION("AppRefreshSucceeded"))
 #define LOG_FAILED_REFRESH(reason) NSLog(@"Failed to refresh the application with RefreshRequest. Reason: %@", reason); notify_post(NOTIFICATION("AppRefreshFailed"))
 
 // Synchronization object for serializing access to inspector variable and data socket
@@ -433,6 +432,8 @@ static void TNSEnableRemoteInspector(int argc, char** argv,
     notify_register_dispatch(
         NOTIFICATION("RefreshRequest"), &refreshRequestSubscription,
         dispatch_get_main_queue(), ^(int token) {
+            notify_post(NOTIFICATION("AppRefreshStarted"));
+
             JSGlobalContextRef context = runtime.globalContext;
             JSObjectRef globalObject = JSContextGetGlobalObject(context);
             JSStringRef liveSyncMethodName = JSStringCreateWithUTF8CString("__onLiveSync");
@@ -460,8 +461,8 @@ static void TNSEnableRemoteInspector(int argc, char** argv,
                 return;
             }
 
-            LOG_SUCCESSFULL_REFRESH;
-    });   
+            notify_post(NOTIFICATION("AppRefreshSucceeded"));
+    });
 
     int attachRequestSubscription;
     notify_register_dispatch(