Ajout de colonnes pour suivi des relations du jeu de données

dois-uga.csv

-doi,title,publisher,publicationYear,language,resourceTypeGeneral,rights,description,source,isActive,state,viewCount,downloadCount,referenceCount,citationCount,versionCount,created,registered,client,provider,subject,subject_raw,sizes,formats
+doi,title,publisher,publicationYear,language,resourceTypeGeneral,rights,description,source,isActive,state,viewCount,downloadCount,referenceCount,citationCount,versionCount,created,registered,client,provider,subject,subject_raw,sizes,formats,relation_nbInstances,relation_nbCitation,traveled_dois,all_relations