* Removed and Reordered the using statements
* Removed and Reordered the usings inside Web Project
* Removed and Reordered the usings inside PublicApi project
* Removed Unused usings and reorganized usings inside Infrastructure project
* 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