Support the anthropic citations prompt format

[jannikmaierhoefer]

Describe the feature or potential improvement

Claude is capable of providing detailed citations when answering questions about documents, helping you track and verify information sources in responses.

https://docs.anthropic.com/en/docs/build-with-claude/citations

Additional information

No response

[marcklingen]

Currently this can be stored in the prompt config as an optional flag. As this is not a standardized flag, I would suggest to not add this prompt management more natively yet.