Additional commands for vacuum

[glompfine]

To simplify the map handling, you could probably add this lines to vacuum.py:

    @command()
    def get_recover_maps(self):
        """Get recover maps."""
        return self.send("get_recover_maps")

    @command(
        click.argument("id"),
        click.argument("map"),
    )
    def recover_map(self, id: int, map: int):
        """Set recover maps ."""
        payload = [int(id), int(map)]
        click.echo("Setting the map %s as active" % payload)
        return self.send("recover_map", payload)[0]

is working fine with my Roborock S6

please se PR: https://github.com/rytilahti/python-miio/pull/608