chore: add a citation.cff

CITATION.cff

@@ -0,0 +1,18 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+  - family-names: Schlögl
+    given-names: Matthias
+    orcid: https://orcid.org/0000-0003-1451-0987
+  - family-names: Touminen
+    given-names: Jouni
+    orcid: https://orcid.org/0000-0003-4789-5676
+  - family-names: de Boer
+    given-names: Victor
+    orcid: https://orcid.org/0000-0001-9079-039X
+title: "InTaVia source data repository"
+version: 0.1-beta
+identifiers:
+  - type: doi
+    value: 10.5281/zenodo.10290205
+date-released: 2023-12-7