In the network manager, there should be an option to import a WireGuard config, like you can do with OpenVPN. WG FTW!
At least on Fedora you can import a wireguard config, i only used with nmcli.
Yes, I used nmcli too. But I haven’t seen any options in Solus or KDE Neon, which I can only assume are the best reference points for a global KDE experience in the near future.
The Networks system tray icon can lead you to manual enter all the wireguard info.
But it does have allow a config to be entered by QRcode or config file.