Add script's defined port to a tag for created LXC

[rushowr]

Just a thought, as I often forget the configured port for a specific container (such as 3000 for Vaultwarden, 3000 for dashy, etc..etc..), how hard would it be to implement functionality such as the recent addition of the IP tag (adapted, I wager, from lxc-iptag) but showing the port as defined in the default interface portion of many script's community-scripts listing?
Similar discussion: #131