create product mapper classes
creating the first test (not finished)
changes in projects
fix project references
add first test (failing)
Add second test (failing)
IMplement FindApiModelMapper
Implemented ProductMapper
Add factory map test
Implement mapperfactory map method
Merge branch 'feature/Api_Model_Mapper_factory' into develop

Conflicts:
	Moonpig.ExternalAPI/Moonpig.ExternalApi.Abstractions/Moonpig.ExternalApi.Abstractions.csproj
	Moonpig.ExternalAPI/Moonpig.ExternalApi.ServiceClients/Moonpig.ExternalApi.ServiceClients.csproj
	Moonpig.ExternalAPI/Tests/Moonpig.ExternalAPI.Stubs/Moonpig.ExternalAPI.Stubs.csproj
	Moonpig.ExternalAPI/Tests/Moonpig.ExternalAPI.Tests/Moonpig.ExternalAPI.Tests.csproj