Add DPG: CIEL terminology (10761)

[dpgabot]

Public Link : https://app.digitalpublicgoods.net/a/10761

[ricardomiron]

CIEL terminology needs to provide a license that is under an approved CC license by the DPGA for content collections. The product owner was navigating how to do this with third-party content and was asked to re-submit once this was solved.