CLASSIC is a tool used for scanning crash logs generated by Buffout 4 (Fallout 4) and Crash Logger (Skyrim), as well as scanning game/mod files for the same games. Starfield support is also on its way ...
They needed to be added manually in the form of a usrcheat.dat file. If you don't care about cheats you can skip this part of setup. One of the most up-to-date cheat databases can be found here.