https://blogs.gnome.org/thaller/2019/03/15/wireguard-in-networkmanager/
https://github.com/WeeJeWel/wg-easy
$ CONF_FILE="wg0.conf" $ nmcli connection import type wireguard file "$CONF_FILE" Connection 'wg0' (125d4b76-d230-47b0-9c31-bb7b9ebca861) successfully added.
nmcli connection up my nmcli connection down my