Add selected state of food to recipe actions

[felixschndr]

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Follow-up on Mealie Discussion #3610

I maintain the custom Mealie Bring API integration, and a user recently requested (Issue #18) that only the selected food items from the UI should be added to the Bring list, instead of all available items.

To support this functionality, it would be helpful if my integration could access the selection state of food items.

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Possible Approaches

I see two potential options:

1. Adding the selected state to recipe fields
   This approach doesn't seem viable, as these fields are transported via the URL, which would make the URL both unwieldy and difficult to parse.

2. Including the selected state in the request payload
   Is this feasible? As I understand it, the request content is crafted by the server. Would this mean that the client must append the selection data before sending the request?

I'd appreciate any insights on the best way to achieve this.