* Adding Id to query so the correct order details are always pulled back
* Removing unused usings
- also removed the sync method as it is not used anywhere in the solution. The Async should be the preferred one.
* Adding integration test for GetByIdWithItemAsync
* Rename test
* Moving Identity seeding to its own class and method.
* Adding tests for AddItem
* Added catalog api controller and functional tests
Added and cleaned up some comments
* Adding integration tests for OrderRepository
* Getting integration test for order working with inmemory db
