🏆 Add a Recommendation Badge from libs.tech

This PR adds a libs.tech recommendation badge to the README, highlighting this project as a top choice in its category. Since [**your project has been approved and listed**](https://libs.tech/project/658041935/sqids-python) among high-quality, curated projects, you can confidently display our endorsement badge. [](https://libs.tech/project/658041935/sqids-python) Congratulations!