Converting tscircuit soup files to kicad_mod files

[seveibar]

• Write a function that converts kicad mod json into a kicad-s-expression (you will need to have an "s expression serializer", there is one here: https://github.com/tscircuit/specctra-dsn-json/blob/main/lib/convert-array-dsn-to-dsn.ts)
• Write a function that converts tscircuit soup json into kicad mod json

[Slaviiiii]

Alright, I can work on this issue.