Codebase model definition and construction

[alcuadrado]

Definition of done

• We need to have a model of the user codebase + its compilation output, which should be functionally equivalent to https://github.com/NomicFoundation/hardhat/blob/main/packages/hardhat-core/src/internal/hardhat-network/stack-traces/model.ts
• We need a module that takes a solc input json and its output json, and crates such a model.