Add four-fermion operators with tau's to the TopFCNC4f operator

Hi,

we would like to update the TopFCNC4f UFO model, which is provided to us by the author Gauthier Durieux.

in this update, the four-fermion operators with tau's are added. tctautau/tctautau and tutautau/tutautau

Thank you and best regards, Shayma (for the ANA- TOPQ-2023-48 analysis team)