Log WpkgInstaller service stopping/starting

WpkgInstaller/WpkgInstaller.cs

@@ -51,6 +51,8 @@ namespace WpkgInstaller
 
             serviceStatus.dwCurrentState = ServiceState.SERVICE_RUNNING;
             SetServiceStatus(this.ServiceHandle, ref serviceStatus);
+
+            eventLog.WriteEntry("Service started");
         }
 
         protected override void OnStop()
@@ -62,6 +64,8 @@ namespace WpkgInstaller
 
             serviceStatus.dwCurrentState = ServiceState.SERVICE_STOPPED;
             SetServiceStatus(this.ServiceHandle, ref serviceStatus);
+
+            eventLog.WriteEntry("Service stopped");
         }
 
         private void eventLog_EntryWritten(object sender, System.Diagnostics.EntryWrittenEventArgs e)