add possibility to increase stop service timeout #1027

def stop(self, timeout=5) -> bool:
        """Stops Appium service if it is running.

        The call will be ignored if the service is not running
        or has been already stopped.

        Returns:
            `True` if the service was running before being stopped
        """
        is_terminated = False
        if self.is_running:
            assert self._process
            self._process.terminate()
            self._process.communicate(timeout=timeout)
            is_terminated = True
        self._process = None
        self._cmd = None
        return is_terminated