Added virtual method to Window class in order to be able
to prepend specific application name to the window name.
It wasn't possible to use existing getName method as it is
used throughout the codebase for switching windows
This PR provides a harness test of a current stage `Bluetooth` pairing
functionality. That is provided a `Bluetooth` device name, test logic:
* navigates to a appropriate window
* scans for devices available
* navigates over appropriate device and check's if it is focused