Add Parsnip Model
Create entirely new model specifications for the parsnip package. This skill
covers creating new model types (like linear_reg(), boost_tree()) with their
constructors, registration, and engine implementations.
Use this skill when: Creating a fundamentally new model type for parsnip.
For adding engines to existing models: See add-parsnip-engine skill instead.
[Description truncada. Veja o README completo no GitHub.]