Is your suggestion for improvement related to a problem? Please describe.
As a User I want to migrate from Citavi to JabRef and want to import the data.

Describe the solution you'd like
An importer for citavi

Additional context
Zotero has an importer https://www.zotero.org/support/kb/import-from-citavi
and it seems like Citavi is using some XMl format which could be used to import