OpenVPN: import tls-crypt keys when importing *.ovpn
Enable importing tls-crypt keys from an openvpn config file. Previously, inline tls-crypt keys from *.ovpn files were ignored, causing the associated connection to fail after import.
Tested by myself on Slackware-current on an EduVPN profile from my employer. Related to bugs https://bugs.kde.org/show_bug.cgi?id=396530 https://bugs.kde.org/show_bug.cgi?id=349282