* added statuses to product + unit test for updating status
* add update to product model
* added integration tests
* added integration test to validate that updating status to null results in invalid_data error
* removed comment
* update GET /store/products integration test
* fixed unit test with IdMap
* changed dbehaviour on invalid status input on admin list products
* updated migration to add status = published on all existing products + added integration test on GET /admin/products when status null is provided
* made requested changes to migration and GET /store/products
* fixed test
* made requested changes to migration
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