Add MLflow for LLM monitoring

Hi! This is an awesome list, thank you for putting this many resources together🙌

This PR adds MLflow in the  LLM monitoring section for completeness. It provides open-telemetry based tracing and evaluation solution: https://mlflow.org/docs/latest/tracing

README.md

@@ -220,6 +220,7 @@ This repository contains a curated list of 120+ LLM libraries category wise.
 
 | Library              | Description                                                                                       | Link  |
 |----------------------|-------------------------------------------------------------------------------------------------|-------|
+| MLflow              | An open-source end-to-end MLOps/LLMOps Platform for tracking, evaluating, and monitoring LLM applications.     | [Link](https://github.com/mlflow/mlflow) |
 | Opik                | An open-source end-to-end LLM Development Platform which also includes LLM monitoring.          | [Link](https://github.com/comet-ml/opik) |
 | LangSmith           | Provides tools for logging, monitoring, and improving your LLM applications.                     | [Link](https://github.com/langchain-ai/langsmith-sdk) |
 | Weights & Biases (W&B) | W&B provides features for tracking LLM performance.                                          | [Link](https://github.com/wandb) |