Use Cases for Adding, Editing, and Deleting Dataset Types

[pdurbin]

What this PR does / why we need it:

I added use cases for the various API endpoints at https://guides.dataverse.org/en/6.7.1/api/native-api.html#dataset-types except for getDatasetAvailableDatasetTypes, which was already implemented in this PR:

• Use Case for Getting Available Dataset Types #366

Here's the complete list now:

• getDatasetAvailableDatasetTypes
• getDatasetAvailableDatasetType
• addDatasetType
• linkDatasetTypeWithMetadataBlocks
• setAvailableLicensesForDatasetType
• deleteDatasetType

Which issue(s) this PR closes:

• Closes Add, Edit, and Delete Dataset Type Use Cases #370

Special notes for your reviewer:

I'll add some comments on specific lines under "files changes" so we can have a thread per note.

Suggestions on how to test this:

In addition to the included tests, I used this script: crud.ts.txt

You can call it like this:

npx tsx crud.ts --base-url $SERVER_URL/api/v1 -a $API_TOKEN 

Is there a release notes update needed for this change?:

Yes, it should say the following use cases are supported:

• getDatasetAvailableDatasetTypes
• getDatasetAvailableDatasetType
• addDatasetType
• linkDatasetTypeWithMetadataBlocks
• setAvailableLicensesForDatasetType
• deleteDatasetType

Additional documentation:

Included in use cases doc.

[g-saracca]

All good! really solid! Approving

[ofahimIQSS]

tests passing - merging PR