https://github.com/mullvad/mullvadvpn-app/releases/tag/2022.2 address_cache was removed with the upstream release, so we remove those parts as well.
Also expose `libwg` through `passthru` in the same way as `openvpn-wireguard`.
This package includes the CLI binaries for mullvad, but does not attempt to build the GUI. This allows it to be (more) cross-platform than the mullvad-vpn package, which depends on a tool that is unavailable for e.g. ARM platforms.
