Lansweeper can pull data from any network device that has any of the following protocols enabled: FTP, HTTP, HTTPS, JetDirect, MOB (Managed Object Browser), SIP, SMTP, SNMP (SNMPv1, SNMPv2 or SNMPv3), SSH, Telnet, WMI. So the question really is whether Apple TVs support any of the aforementioned protocols. I don't know whether they do. If you tick Save Pinged IP for your IP ranges under Configuration\Scanning Methods, Lansweeper will generate assets for all pingable IPs though.
In regards to deployment: the deployment feature can only be used to deploy changes on Windows computers. I'm not sure which commands you could use, but you could potentially create a custom action under Configuration\Asset Pages to reboot the TVs. Action parameters are listed when you hit the Add Asset Action button.