Mullvad VPN App https://github.com/mullvad/mullvadvpn-app. It's an open source VPN client supporting Wireguard and OpenVPN.

I've already submitted a package for inclusion here D10878 and I'm willing to step up as maintainer. There was already a request here T6793, but no one has responded on reopening the task, so I've decided to submit a new one.