RFCOMM services not discovered when we dont open the connection

[gmallios]

When we try to connect to an RFCOMM service when already connected to a device, the service is not found.Disconnecting and opening that connection through the bluetooth-lib allows us to connect to that service.

Perhaps we should wait after the performSdpQuery like in https://github.com/eelcocramer/node-bluetooth-serial-port/blob/master/src/macos/BluetoothWorker.mm