Copy local files/directories to device.

def push(self, local: _PATH = 'LICENSE', remote: _PATH = '/sdcard/LICENSE') -> None:
        '''Copy local files/directories to device.'''
        if not os.path.exists(local):
            raise FileNotFoundError(f'Local {local!r} does not exist.')
        self._execute('-s', self.device_sn, 'push', local, remote)