docs: add badges on readme

Author: syi0808

README.md

@@ -2,6 +2,15 @@
 <img src="https://github.com/syi0808/pubm/blob/main/docs/logo.svg" height="150">
 </p>
 
+<p align="center">
+  <a href="https://www.npmjs.com/package/pubm">
+    <img src="https://img.shields.io/npm/v/pubm" alt="npm version" />
+  </a> 
+  <a href="https://jsr.io/@pubm/pubm">
+    <img src="https://jsr.io/badges/@pubm/pubm/score" alt="jsr version" />
+  </a>
+</p>
+
 <h1 align="center">
 pubm
 </h1>
@@ -160,4 +169,4 @@ The only way to access jsr’s certified environment is through a direct API req
 
 The jsr token is encrypted and stored using various layers of information. As long as you have control over the local machine where pubm was run, it is highly unlikely the token can be compromised.
 
-If you prefer not to save tokens, you can use the `--no-save-token` option, which will request the token each time.
+If you prefer not to save tokens, you can use the `--no-save-token` option, which will request the token each time.