Add estimates of rare nutrients for people with rare/liver illnesses

[teolemon]

What

Add estimates of rare nutrients (using CIQUAL or other custom tables) for people with rare illnesses

• An example is the lysine levels in food, for an illness touching the child of a friend. Even a crude estimate would be helpful.
• Another example are people with pancreas/liver diseases, who need to limit the amount of specific nutrients which might not be on regular nutrition tables
• https://docs.google.com/spreadsheets/d/1k-iADGteqdOaidJ2971G-PBSsQOr7doKwQG6yKo1el0/edit#gid=751510319

Part of

• Add better support for specific diets #9092

[github-actions]

This issue has been open 90 days with no activity. Can you give it a little love by linking it to a parent issue, adding relevant labels and projets, creating a mockup if applicable, adding code pointers from https://github.com/openfoodfacts/openfoodfacts-server/blob/main/.github/labeler.yml, giving it a priority, editing the original issue to have a more comprehensive description… Thank you very much for your contribution to 🍊 Open Food Facts