**What**
- Create the fulfillment manual package with a first iteration API
- Create a new `AbstractFulfillmentProviderService` and `IFulfillmentProvider`
- Modify the module service interface to add new methods to manipulate the fulfillment and the communication with the external provider
- create (no bulk)
- cancel (no bulk)
- update (no bulk)
- list
- listAndCount
- retrieve
- Add new methods to the service provider service to include communication with the third party provider
- get options
- create
- cancel
- validate data
- validate option
- Update/create interfaces and DTO's
- fix repository serializer to allow non entity to be passed without throwing
- split module tests into multiple files to simplify navigation
- Add integration tests to validate fulfillments manipulation and external provider loading + communication
FIXES CORE-1729
FIXES CORE-1785
FIXES CORE-1784
FIXES CORE-1766
62a7bcc30c