Yes, for example your unpacked mod, have;
ProKiller/Gostek-gfx
ProKiller/Weapons-gfx
ProKiller/Interface-gfx
So you can put this folder into Soldat mods:
Soldat/Mods/ProKiller
Last:
Soldat/Starter.exe
Select your mod like [ProKiller] and click 'run soldat modded'