docs: add github action badge for docs index

Signed-off-by: yuluo-yx <[email protected]>

Author: yuluo-yx

website/docs/intro.md

@@ -7,6 +7,7 @@ sidebar_position: 1
 [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/vllm-project/semantic-router/blob/main/LICENSE)
 [![Hugging Face](https://img.shields.io/badge/🤗%20Hugging%20Face-Community-yellow)](https://huggingface.co/LLM-Semantic-Router)
 [![Go Report Card](https://goreportcard.com/badge/github.com/vllm-project/semantic-router)](https://goreportcard.com/report/github.com/vllm-project/semantic-router)
+![](https://github.com/vllm-project/semantic-router/workflows/Test%20And%20Build/badge.svg)
 
 An intelligent **Mixture-of-Models (MoM)** router that acts as an Envoy External Processor (ExtProc) to intelligently direct OpenAI API requests to the most suitable backend model from a defined pool. Using BERT-based semantic understanding and classification, it optimizes both performance and cost efficiency.