[Support] specify IP address of Shelly device
Hi, running the latest homebridge and plug-in. 

My Shelly devices are connected to a different vlan than the homebridge server, for Security reasons. I know Shelly devices IP addresses and opened the firewall for the HB server to communicate to them. 

Does this plug in allow me to specify not just ID of each Shelly device but also their IP address? 

Thank you 
