Mark interfaces deprecated

[sivaschenko]

The following interfaces should be marked as deprecated

1. app/code/Magento/Analytics/Model/ConfigInterface.php: should be replaced by Magento\Framework\Config\DataInterface
2. app/code/Magento/Analytics/Model/Connector/Http/ClientInterface.php: should be replaced by Psr\Http\Client\ClientInterface
3. app/code/Magento/Analytics/Model/Connector/Http/ResponseHandlerInterface.php: related to app/code/Magento/Analytics/Model/Connector/Http/ClientInterface.php
4. app/code/Magento/Analytics/ReportXml/ConfigInterface.php: should be replaced by Magento\Framework\Config\DataInterface
5. app/code/Magento/GraphQl/Model/Query/ContextFactoryInterface.php: Interfaces are not necessary for factories, should be deprecated and later removed
6. app/code/Magento/Sales/Model/ResourceModel/HelperInterface.php: 1 usage, need to be eliminated in favor of private implementation
7. lib/internal/Magento/Framework/Filter/Encrypt/AdapterInterface.php: No implementations, there are preference but they implement zend interface directly. Seems unused
8. lib/internal/Magento/Framework/GraphQl/Query/PostFetchProcessorInterface.php: Not used
9. lib/internal/Magento/Framework/Model/Operation/ReadInterface.php: Not used
10. lib/internal/Magento/Framework/Model/Operation/WriteInterface.php: Not used
11. lib/internal/Magento/Framework/Model/ResourceModel/Db/ProcessEntityRelationInterface.php: Not used
12. lib/internal/Magento/Framework/Module/ResourceInterface.php: Implementation is deprecated with explanation why
13. lib/internal/Magento/Framework/View/Asset/SourceFileGeneratorInterface.php: Not used
14. lib/internal/Magento/Framework/View/Design/Theme/Domain/PhysicalInterface.php: Not used
15. lib/internal/Magento/Framework/View/Design/Theme/Domain/StagingInterface.php: Not used
16. lib/internal/Magento/Framework/View/Design/Theme/Domain/VirtualInterface.php: Not used
17. app/code/Magento/CustomerGraphQl/Api/ValidateCustomerDataInterface.php: GraphQL modules should be extensible via GraphQL schema. They are not domain modules and must not contain Api folder
18. app/code/Magento/Catalog/Model/EntityInterface.php: Unused interface, exists for 5 years

[m2-assistant]

Hi @sivaschenko. Thank you for your report.
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[ProkopovVitaliy]

@magento i am working on this