[Feature Request] a CLI that output unused field/argument in the schema

[tpucci]

Hello there 🙂

I would love that ferry, thanks to generated AST files, outputs unused part of my schema.

I can make a contribution if I have some directions.

1. Right now, I am blocked, I don't know how to import in a single file all generated AST files... except with a builder.
2. Then, how to compare definitions and usage ? By hand ? Is there a package I don't know that can help ?

Cheers !