feat: add llm.log to Observability section

Signed-off-by: lanesket <gamesrud@yandex.ru>

Author: lanesket

README.md

@@ -166,6 +166,7 @@ An awesome & curated list of the best LLMOps tools for developers.
 | [QWED](https://github.com/QWED-AI/qwed-verification) | Deterministic verification protocol for LLM outputs using 8 formal verification engines (SymPy, Z3, AST, SQLGlot). Prevents hallucinations through mathematical proofs rather than statistical methods. | ![GitHub Badge](https://img.shields.io/github/stars/QWED-AI/qwed-verification.svg?style=flat-square) |
 | [Great Expectations](https://github.com/great-expectations/great_expectations) | Always know what to expect from your data.                                                                                                                                                                                     | ![GitHub Badge](https://img.shields.io/github/stars/great-expectations/great_expectations.svg?style=flat-square) |
 | [Helicone](https://github.com/Helicone/helicone)                              | Open source LLM observability platform. One line of code to monitor, evaluate, and experiment with features like prompt management, agent tracing, and evaluations.                                                            | ![GitHub Badge](https://img.shields.io/github/stars/Helicone/helicone.svg?style=flat-square)                     |
+| [llm.log](https://github.com/lanesket/llm.log)                                | Local MITM proxy with TUI dashboard for monitoring LLM API calls — token usage, real costs, latency and full request inspector. Zero code changes, single binary, pure Go. Supports OpenAI, Anthropic and OpenRouter.        | ![GitHub Badge](https://img.shields.io/github/stars/lanesket/llm.log.svg?style=flat-square)                      |
 | [Traceloop OpenLLMetry](https://github.com/traceloop/openllmetry)                              | OpenTelemetry-based observability and monitoring for LLM and agents workflows.                                                           | ![GitHub Badge](https://img.shields.io/github/stars/traceloop/openllmetry.svg?style=flat-square)    
 | [Langfuse 🪢](https://langfuse.com) | Open-source LLM observability platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications. | ![GitHub Badge](https://img.shields.io/github/stars/langfuse/langfuse.svg?style=flat-square)              |
 | [whylogs](https://github.com/whylabs/whylogs)                                  | The open standard for data logging                                                                                                                                                                                             | ![GitHub Badge](https://img.shields.io/github/stars/whylabs/whylogs.svg?style=flat-square)                       |