Add packaage manager field

Author: RichDom2185

package.json

@@ -24,6 +24,7 @@
     "url": "https://github.com/source-academy/sicp/issues"
   },
   "homepage": "https://sourceacademy.org/sicpjs",
+  "packageManager": "[email protected]+sha1.ac34549e6aa8e7ead463a7407e1c7390f61a6610",
   "devDependencies": {
     "@babel/core": "^7.27.4",
     "@babel/node": "^7.27.1",