zhouzi/akimeo

AI Summary: Refactor the '@akimeo/modele' codebase by splitting the existing `personne.ts` and `foyer.ts` files into multiple files organized by type (types.ts, constants.ts, helpers.ts, schemas.ts) to improve code organization and maintainability. This involves moving existing code into the new files and managing dependencies to avoid circular imports.

AI Summary: Refactor the `@akimeo/fiscal` package to improve code organization. This involves splitting the `calculer-ir.ts` file into multiple files, each exporting a single function, and organizing these files into subdirectories (e.g., `src/ir/`, `src/is/`) for better maintainability as the package grows.