* Model addition timeline * Link guide * Update docs/source/en/add_new_model.md Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com> * Update docs/source/en/add_new_model.md Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com> * Review comments * Add contact email --------- Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>