Callback Handler to enable Chainlit to display intermediate steps in the UI.

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Usage

Code Example
from llama_index.core.callbacks import CallbackManager
from llama_index.core.service_context import ServiceContext
import chainlit as cl



@cl.on_chat_start
async def start():
    service_context = ServiceContext.from_defaults(callback_manager=CallbackManager([cl.LlamaIndexCallbackHandler()]))
    # use the service context to create the predictor

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