Enable flexible way to pass different prompts to different workflow nodes

[jacopo-chevallard]

We need to be able to easily pass different prompts / prompt IDs to our LangGraph nodes, for instance via a metadata dictionary, then use the prompt service to collect them

[linear]

CORE-209 Enable flexible way to pass different prompts to different workflow nodes

[github-actions]

Thanks for your contributions, we'll be closing this issue as it has gone stale. Feel free to reopen if you'd like to continue the discussion.