Add detection for more packaging codes

[teolemon]

List

Gluten codes

GLUTEN-FREE\nGB-077-286
Add detection for Gluten codes such as the one in this image
https://static.openfoodfacts.org/images/products/408/860/001/8089/1.jpg

PEFC codes

PEFC/07-32-227
https://static.openfoodfacts.org/images/products/322/888/101/0971/18.jpg
\nPEFC/07-32-227\n

Spanish codes

• Introduce Spanish R.G.S.E.A.A packager code support #233

Part of

• 🎯 What can I work on ? #374

[raphael0202]

Can you give me a bit more context about what are these gluten code and how to detect them? What are they used for?

[alexgarel]

Can you give me a bit more context about what are these gluten code and how to detect them? What are they used for?

I think they are certifications. (search gluten free certification)

First one seems to be linked to https://www.aoecs.org/