docs: add downloads badges to README packages table

Author: hackycy

README.md

@@ -8,11 +8,11 @@
 
 ## Packages
 
-| Package | Version |
-| --- | --- |
-| [@easyink/designer](packages/designer) | [![npm][designer-npm-version-src]][designer-npm-version-href] |
-| [@easyink/viewer](packages/viewer) | [![npm][viewer-npm-version-src]][viewer-npm-version-href] |
-| [@easyink/mcp-server](packages/mcp-server) | [![npm][mcp-server-npm-version-src]][mcp-server-npm-version-href] |
+| Package | Version | Downloads |
+| --- | --- | --- |
+| [@easyink/designer](packages/designer) | [![npm][designer-npm-version-src]][designer-npm-version-href] | [![npm downloads][designer-npm-downloads-src]][designer-npm-version-href] |
+| [@easyink/viewer](packages/viewer) | [![npm][viewer-npm-version-src]][viewer-npm-version-href] | [![npm downloads][viewer-npm-downloads-src]][viewer-npm-version-href] |
+| [@easyink/mcp-server](packages/mcp-server) | [![npm][mcp-server-npm-version-src]][mcp-server-npm-version-href] | [![npm downloads][mcp-server-npm-downloads-src]][mcp-server-npm-version-href] |
 
 ## Documentation
 
@@ -39,8 +39,11 @@ pnpm play
 [license-href]: https://github.com/hackycy/easyink/blob/main/LICENSE
 
 [designer-npm-version-src]: https://img.shields.io/npm/v/@easyink/designer?style=flat&colorA=080f12&colorB=1fa669
+[designer-npm-downloads-src]: https://img.shields.io/npm/dm/@easyink/designer?style=flat&colorA=080f12&colorB=1fa669
 [designer-npm-version-href]: https://npmjs.com/package/@easyink/designer
 [mcp-server-npm-version-src]: https://img.shields.io/npm/v/@easyink/mcp-server?style=flat&colorA=080f12&colorB=1fa669
+[mcp-server-npm-downloads-src]: https://img.shields.io/npm/dm/@easyink/mcp-server?style=flat&colorA=080f12&colorB=1fa669
 [mcp-server-npm-version-href]: https://npmjs.com/package/@easyink/mcp-server
 [viewer-npm-version-src]: https://img.shields.io/npm/v/@easyink/viewer?style=flat&colorA=080f12&colorB=1fa669
+[viewer-npm-downloads-src]: https://img.shields.io/npm/dm/@easyink/viewer?style=flat&colorA=080f12&colorB=1fa669
 [viewer-npm-version-href]: https://npmjs.com/package/@easyink/viewer