[Suggestion]: Api for adding button in RecipeLayout

### Suggestion Other mods may need to add new buttons to recipeLayout, but the api is currently missing, using mixins is terrible, and the layout calculations need to be fixed as well <img width="2447" height="1600" alt="Image" src="https://github.com/user-attachments/assets/071486e5-1438-45ae-8f15-3ad8213fa1bd" />