Open Wireguard port when a user configures Wireguard as a server

[jelly]

Page: "Network"

When configuring wireguard as a server the wireguard port is not opened so a user has to go to the firewall page and open for example 58120. It would be better if we did this out of the box, but as the dialog is for configuring a client/server we don't want to always open the wireguard port.

Note that routing masquerading might need to be enabled firewall-cmd --permanent --zone=public --add-masquerade. Which the Firewall page might not support showing / setting. (This needs research) .