docs(readme): add CI badge to README

Author: atasoglu

README.md

@@ -4,6 +4,7 @@
 [![Python 3.9+](https://img.shields.io/badge/python-3.9+-blue.svg)](https://www.python.org/downloads/)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Code style: ruff](https://img.shields.io/badge/code%20style-ruff-000000.svg)](https://github.com/astral-sh/ruff)
+[![CI](https://github.com/atasoglu/sqlite-vec-client/actions/workflows/test.yml/badge.svg)](https://github.com/atasoglu/sqlite-vec-client/actions/workflows/test.yml)
 
 A tiny, lightweight Pythonic helper around [sqlite-vec](https://github.com/asg017/sqlite-vec) that lets you store texts, JSON metadata, and float32 embeddings in SQLite and run fast similarity search.