[Suggestion] Auto pre-heat step

[awwithro]

I'd be handy to have one baking step bake for ~{30%minutes@350F} and have that automatically result in the first step of the recipe being 1. Preheat oven to 350F Probably the sort of thing that is much more tricky than it sounds :)

[TheMagicNacho]

How would we know that a preheat is required? Is it only for "bake for" keywords? Would there be other instances where pre-heat would be needed?