docs: add integration langgraph server

[jongwoo328]

This PR updates the documentation by adding an example of configuring Langfuse callbacks with with_config when using LangGraph Server

Let me know if you have any tweaks or suggestions!

---

Important

Adds documentation for integrating Langfuse callbacks with LangGraph Server using with_config for automatic graph tracing.

• Documentation:
  • Adds example for configuring Langfuse callbacks with with_config in LangGraph Server in example-python-langgraph.md and integration_langgraph.md.
  • Demonstrates automatic graph tracing by including Langfuse callback during graph declaration.
• Code Example:
  • Shows usage of CallbackHandler and with_config to compile a graph with callbacks in Python code snippet.

^{This description was created by for 8407988. It will automatically update as commits are pushed.}

[review-notebook-app]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[vercel]

@jongwoo328 is attempting to deploy a commit to the langfuse Team on Vercel.

A member of the Team first needs to authorize it.

[CLAassistant]

All committers have signed the CLA.