implement langfuse

[tomlynchRNA]

https://langfuse.com/docs/get-started

At first, just research the feasibility, etc and comment with thoughts on what it would take to implement @charl3sj .

[charl3sj]

From a quick glance it seems like:

• To be able to self-host, there's a dependency on postgres. That means we'll have to run 2 additional docker containers in our setup- one for langfuse itself, and the second for postgres.
• The most useful/relevant bit for us, at the moment, is the langchain integration as documented here. I imagine it will be pretty useful to setup a callback handler and pass it while instantiating Agents. This is probably the only setup required and seems easy. IMO, it's worth giving it a spin and understanding how useful it really is in practice.