[Epic] ArXiv Importer

[eloiferrer]

Epic description in words: Requirements for the ArXiv importer

Additional Info: Currently metadata can be imported through OAI (https://info.arxiv.org/help/oa/index.html). This includes:

• publication date
• arxiv ID
• DOI
• arXiv classification
• Mathematics Subject Classification ID
• author name strings

Corresponding Milestones:

- corresponding milestone one **Epic issues**: - [ ] issue one github-link - [ ] ... **Related bugs**: - **Epic acceptance criteria**: - [ ] first criterion **Checklist for this epic**: - [ ] the main MaRDI project has been assigned as project - [ ] report has been created