Add support for new dataset type feature

[poikilotherm]

https://guides.dataverse.org/en/latest/api/native-api.html#create-a-dataset-with-a-dataset-type-software-etc

Maybe needs a lookup which types are enabled, too.

Context: https://dataverse.zulipchat.com/#narrow/channel/377090-python/topic/easyDataverse.20and.20types.20support/with/522719866

[pdurbin]

Just an FYI that there are three ways to set the dataset type (only via API and only when the dataset is created):

• Create a Dataset with a Dataset Type (Software, etc.) (Native API)
• Create a Dataset with a Dataset Type (Semantic API)
• Import a Dataset with a Dataset Type (Software, etc.)

From https://guides.dataverse.org/en/6.6/user/dataset-management.html#dataset-types

[JR-1991]

Feature has been added and merged with PR

• Add dataset types to Dataset and Dataverse #52