[enhancement] - calculate and record carbs based on food inputs

Would like to be able to:

• Iteration 1 - Select a food from the FOOD tab and have it open the bolus wizard/calculator w/ the correct number of carbs
• record meal in the local database - check data model of NS to be compatible
• Have a meal calculator where multiple foods & portions can be added/adjusted and then the meal can record carbs or start the bolus wizrd/calculator
• be able to adjust portion sizes based on # of portions (i.e. 1 slice of bread, vs 2 slices of bread), but if the portion in NS is in oz or ml, then it would be nice to adjust the ml/oz amount (i.e. say 150ml rather than 1.5 of a portion of 100ml)
• nice to have - default the list of foods to foods frequently consumed at that time of day (i.e. default to show breakfast foods in the morning)
• be able to make adjustments (i.e only do 50% due to pending exercise, or add an extra 20g of carbs)
• be able to save the meal with a name to the DB to be able to re-use the meal at a future date
• be able to see prior meals & post-meal sugars to make a better bolus decision for today's meal
• be able to use an existing database, such as https://world.openfoodfacts.org. Want to be able to use that, but also not be overwhelmed by choices.
• • https://openfoodfacts.github.io/api-documentation/
• • https://github.com/openfoodfacts/openfoodfacts-androidapp
• nice to have - add a photo of the meal
• be able to record eCarbs and/or open the calculator
• nice to have - recommend food selections based on similar foods. I.e. suggest cheese if you have selected crackers
• Include fat & protein into carb calculations

Start by reviewing the FOOD tab, bolus wizard/calculator, and local database data model, then read the linked Open Food Facts API documentation. Break the requested food selection, meal editing, recording, reuse, and calculation behavior into scoped decisions; done requires an agreed subset and compatible meal data model.