chore: update readme badges (#68)

Author: ymc9

README.md

@@ -6,6 +6,9 @@
     </picture>
     </a>
     <h1>ZenStack V3</h1>
+    <a href="https://www.npmjs.com/package/@zenstackhq/cli?activeTab=versions">
+        <img src="https://img.shields.io/npm/v/%40zenstackhq%2Fcli/next">
+    </a>
     <img src="https://github.com/zenstackhq/zenstack-v3/actions/workflows/build-test.yml/badge.svg">
     <a href="https://twitter.com/zenstackhq">
         <img src="https://img.shields.io/twitter/url?style=social&url=https%3A%2F%2Fgithub.com%2Fzenstackhq%2Fzenstack">