Remove PnnsGroupQueryConfiguration, use ProductSearchQueryConfiguration instead about openfoodfacts-dart HOT 7 CLOSED

Sounds good. For what it's worth, I don't use this feature. We might even want to bump the major version since this is a breaking change.

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Probably related: when I see product 4337185662713, I find the following data very interesting:

"categories_tags":[
"en:plant-based-foods-and-beverages",
"en:plant-based-foods",
"en:cereals-and-potatoes",
"en:breakfasts",
"en:cereals-and-their-products",
"en:breakfast-cereals",
"en:cereals-with-fruits",
"en:mueslis",
"en:mueslis-with-fruits"
]

Is it possible to use those data for a search about similar products, and how should we write the filter? (cf. openfoodfacts/smooth-app#23)

PS: I recommend the annotation @deprecated

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@monsieurtanuki : the categories_tags correspond to our multilingual and multilevel categories taxonomy. When someone adds a category, we will also all the parents categories. But that taxonomy is very complex: it can be very detailed (very fine categories), some categories have multiple parents etc. So it's a bit difficult to navigate. e.g. try to start at "Snacks" and to go down: https://world.openfoodfacts.org/category/snacks

The PNNS groups 1 and 2 are a 2 level hierarchy (it is the groups used by the French "Programme National Nutrition et Santé"). It's built on top of the categories. @PrimaelQuemerais chose it for Smoothie because the PNNS groups are relatively balanced.

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@stephanegigandet Oh, I don't mean to dismiss PNNS groups and use only categories_tags instead.

The idea was to keep PNNS as is, fix the query as this issue is about, and to introduce another type of search.
No navigation, just: I see a product, I would like to see similar products, I see all the categories it belongs to in categories_tags, I select the category that match the desired granularity, I click, and then I see the similar products.

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@monsieurtanuki Sorry for the late response, I didn't see your last comment. Yes, definitely, the categories_tags can be useful to find similar products. The last one is the most specific.

The query would be something like:

var parameters = <Parameter>[
        const TagFilter(
            tagType: "categories",
            contains: true,
            tagName: "en:mueslis-with-fruits"),
      ];

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Thank you @stephanegigandet! Cf. openfoodfacts/smooth-app#183

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Fixed by #181.

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