新增 build 脚本

package.json

@@ -6,7 +6,8 @@
   "main": "dist/yvan-ext.js",
   "scripts": {
     "clean": "rimraf dist/",
-    "dev": "rollup -w -c build/rollup.amd.js --environment NODE_ENV:development"
+    "dev": "rollup -w -c build/rollup.amd.js --environment NODE_ENV:development",
+    "build": "rollup -c build/rollup.amd.js --environment NODE_ENV:development"
   },
   "devDependencies": {
     "@rollup/plugin-json": "^4.1.0",