change recipeIngredient from text to custom object

[Pebkac03]

I have seen multiple older issues about this but I am raising it again since I think time has brought even more reasons for this to be changed.

I believe a recipeIngredient should follow a model similar to instructions which can be of either type text or HowTo. This would mean ingredients could have their amount, allergens, and other applicable designations specified.

This would allow traditional consumers like recipe managers like Mealie, Tandoor, Nextcloud coockbok, etc. To get more data when importing recipes. I also think with AI becoming more prevalent it would aid in AI searches for recipes, allowing them to provide recipes based on users' queries easier and with more accuracy. One example would be searching for a recipe for someone allergic to dairy. Would a LLM be able to figure out what foods fit that description? Would it be able to realise milk is dairy but soy milk is not?