Add Halal/Non-Halal detection

[teolemon]

What

### Tasks
- [ ] List of halal/non-halal/unsure additives: https://github.com/manwar/Food-ECodes/blob/master/share/ecodes.xml
- [ ] Let's start by flagging clearly non-halal products based on categories
- [ ] Let's start by flagging clearly non-halal products based on ingredients
- [ ] Add positive halal products based on labels
- [ ] Add quality mechanism to detect any mismatch between a halal label and ingredient analysis
- [ ] https://github.com/openfoodfacts/openfoodfacts-server/issues/4263
- [ ] Detect products containing alcohol

Halal: This product is not halal
Halal: We could not determine the status of this product with certainty.

Blocked on

• 4263

Part of

• 5706

[MohamedFBoussaid]

Hey @teolemon is this issue still up to date ?

[teolemon]

One user is asking for more emphasis on halal in the app comments: https://play.google.com/console/u/0/developers/4712693179220384697/app/4972942602078310258/user-feedback/review-details?reviewId=15191bb8-1089-4a71-afb5-db63edd6497a&corpus=PUBLIC_REVIEWS

[teolemon]

@MohamedFBoussaid I think we should start with #4263

[teolemon]