[Plonky3 Codegen] Support Aux trace generation for logup

For now, LogUp based bus have their trace generated automatically in #515 but without inverse batching.

We should adapt the code for this.

_Originally posted by @Al-Kindi-0 in https://github.com/0xMiden/air-script/pull/515#discussion_r2564884981_

Review PR #515 to understand the current automatic trace generation for LogUp-based buses and the missing inverse batching. Examine the Plonky3 codegen module, likely in a directory like `codegen/` or `src/codegen/`. Look for functions handling auxiliary trace generation and logup. The goal is to adapt the code to include inverse batching, ensuring the generated traces are correct for STARK constraints.

Scritto dal modello di indicizzazione a partire dal testo della issue.