Hi there,
I had the same issue when finding a gui driven solution i got my attention to
these :
https://gitlab.gnome.org/World/Authenticator (GPL-3.0 License )
or
https://github.com/paolostivanin/OTPClient (GPL-3.0 License )
i know here are specific apps and games not welcome(or shouldnt be
recommended)but as i understood they have these (GPL-3.0 License ) so they
should be recommendable. Please correct me if im wrong and pardon just trying
to help ^^ because for me its a perfect solution,when avoiding mobile phones
with android,ios,etc.
Have a wonderful time mates :D and good luck
Greets
