Merge branch 'add_zenodo_schema' into 'master'

Add zenodo schema

See merge request !7

eossr/metadata/schema/.zenodo.json

+{
+  "title": "For details check https://developers.zenodo.org/#representation.",
+  "upload_type": "software",
+  "access_right": "open",
+  "publication_date": "YYYY-MM-DD",
+  "communities": [{"identifier": "escape2020"}],
+  "grants": [{"id": "10.13039/501100000780::824064"}],
+  "creators": [
+    {"name": "Name and Surname",
+      "affiliation": "Institute, Center",
+      "orcid": "0000-0000-0000-0000"}
+  ],
+  "description": "",
+  "license": "",
+  "doi": "",
+  "prereserve_doi": "",
+  "keywords": [],
+  "notes": "",
+  "related_identifiers": "",
+  "contributors": [{}],
+  "references": [],
+  "version": "",
+  "language": "",
+  "journal_title": "",
+  "journal_volume": "",
+  "journal_issue": "",
+  "journal_pages": "",
+  "conference_title": "",
+  "conference_acronym": "",
+  "conference_dates": "",
+  "conference_place": "",
+  "conference_url": "",
+  "conference_session": "",
+  "conference_session_part": "",
+  "imprint_publisher": "",
+  "imprint_isbn": "",
+  "imprint_place": "",
+  "partof_title": "",
+  "partof_pages": "",
+  "thesis_supervisors": "",
+  "thesis_university": "",
+  "subjects": "",
+  "locations": [{}],
+  "dates": [{}],
+  "method": ""
+}
\ No newline at end of file