Impacted files:
* `app_en.arb`: added the "next n questions" label for hunger games
* `app_fr.arb`: added the "next n questions" label for hunger games
* `congrats.dart`: "continue" button label as a String parameter
* `product_questions_query.dart`: added a `count` parameter
* `product_questions_widget.dart`: added the `count` parameter
* `question_page.dart`: different `count` parameters; set the "continue" button label
* `questions_query.dart`: added a `count` parameter
* `random_questions_query.dart`: added a `count` parameter
* `robotoff_insight_helper.dart`: added the `count` parameter
* feat: 4020 - instant answers for hunger games
New files:
* `background_task_hunger_games.dart`: Background task about answering a hunger games question.
* `random_questions_query.dart`: Robotoff questions helper, for random product questions.
Deleted file:
* `product_question_page.dart`
Impacted files:
* `abstract_background_task.dart`: added "hunger games"
* `background_task_crop.dart`: minor refactoring
* `background_task_details.dart`: minor refactoring
* `background_task_image.dart`: minor refactoring
* `background_task_manager.dart`: simplified the code, as we now always work on tasks with different stamps
* `background_task_refresh.dart`: minor refactoring
* `background_task_unselect.dart`: minor refactoring
* `new_product_page.dart`: minor refactoring
* `offline_data_page.dart`: minor refactoring
* `operation_type.dart`: added a type for "hunger games" background task
* `product_list_import_export.dart`: minor refactoring
* `product_list_page.dart`: minor refactoring
* `product_questions_query.dart`: pre-loads the product if relevant
* `product_questions_widget.dart`: minor refactoring
* `product_refresher.dart`: new standard configuration for product lists; new silent download of product lists; minor refactoring
* `question_card.dart`: now downloading the product only if not in the local database
* `question_page.dart`: now saving the answer with background tasks; refactored
* `questions_query.dart`: refactored as abstract, with code moved to new file `random_questions_query.dart`
* `robotoff_insight_helper.dart`: minor refactoring
* feat: 4020 - unrelated package upgrade
* fix: 4098 - new enum value from iOS 12
Impacted files:
* `paged_to_be_completed_product_query.dart`: renamed `State` as `ProductState`
* `paged_user_product_query.dart`: created local `UserSearchType` instead of deprecated off-dart `UserProductSearchType`; used `ProductSearchQueryConfiguration` instead of deprecated `UserProductSearchQueryConfiguration`
* `product_query.dart`: now that we use fully v3, we don't need the temporary field list for user-related queries with v2
* `pubspec.lock`: wtf
* `pubspec.yaml`: upgrade to off-dart 2.0.0
* `user_preferences_account.dart`: now using new local class `UserSearchType`
* and reduced all off-dart imports to a single `import 'package:openfoodfacts/openfoodfacts.dart';`
What:
* added language and country to query product list keys
* that means that if I run a query for "pizza", not only the results will be different depending on the language and country (that was already the case), but the results will be cached accordingly - if I change language or country, I will see the cached results for those new language/country, not the results of the same query but with different language/country
* we needed that improvement in order to display correctly the "world" results; that was the first step
* also moved all the "query" classes to a specific folder
* fun fact: there are more "pizza"s in France than in Italy
Impacted files:
* `abstract_onboarding_data.dart`: minor refactoring
* `barcode_product_query.dart`: moved; minor refactoring
* `category_product_query.dart`: moved; added language and country to product list key
* `continuous_scan_model.dart`: minor refactoring
* `country_selector.dart`: minor refactoring
* `database_product_list_supplier.dart`: minor refactoring
* `keywords_product_query.dart`: moved; added language and country to product list key
* `main.dart`: minor refactoring
* `new_product_page.dart`: minor refactoring
* `nutrition_page_loaded.dart`: minor refactoring
* `ocr_helper.dart`: minor refactoring
* `onboarding_data_product.dart`: minor refactoring
* `ordered_nutrients_cache.dart`: minor refactoring
* `paged_product_query.dart`: moved; added language and country to product list key; refactored around `getProducts`
* `paged_search_product_query.dart`: moved; refactored
* `paged_to_be_completed_product_query.dart`: moved; added language and country to product list key; refactored
* `paged_user_product_query.dart`: moved; added language to product list key; refactored
* `picture_capture_helper.dart`: minor refactoring
* `product_dialog_helper.dart`: minor refactoring
* `product_list.dart`: added optional language and country to constructor parameters
* `product_list_import_export.dart`: minor refactoring
* `product_list_page.dart`: minor refactoring
* `product_list_supplier.dart`: minor refactoring
* `product_query.dart`: moved; not an interface anymore
* `product_query_model.dart`: minor refactoring
* `product_query_page_helper.dart`: minor refactoring
* `product_refresher.dart`: minor refactoring
* `query_product_list_supplier.dart`: minor refactoring
* `robotoff_insight_helper.dart`: minor refactoring
* `robotoff_questions_query.dart`: moved; minor refactoring
* `search_page.dart`: minor refactoring
* `simple_input_page_helpers.dart`: minor refactoring
* `summary_card.dart`: minor refactoring
* `user_preferences_account.dart`: minor refactoring
* `user_preferences_dev_mode.dart`: minor refactoring
