Add direct Datacite API

[ericjeangirard]

For now, we use only the BSO ingested data from Datacite.
We could use the direct Datacite API.
Searching in the fields
creators.affiliation.name / contributors.affiliation.name fields
creators.affiliation.affiliationIdentifier / contributors.affiliation.affiliationIdentifier

https://api.datacite.org/dois?affiliation=true&query=creators.affiliation.name:*%22%C3%A9cole%20polytechnique%22*%20OR%20contributors.affiliation.name:*%22%C3%A9cole%20polytechnique%22*%20OR%20contributors.affiliation.affiliationIdentifier:%22https://ror.org/02s376052%22