cad/qucs-s: Add 25.2.0 

Qucs-S is a circuit simulation program based on Qucs circuit
simulator.The "S" letter indicates SPICE. The purpose of the Qucs-S
project is to use free circuit simulation kernels (Ngspice, Qucsator,
Xyce) with the unified GUI based on Qt6 toolkit. It merges the
power of SPICE and the simplicity of the Qucs GUI.
