Add publishConfig.access to package.json

Author: marcoroth

package.json

@@ -35,5 +35,8 @@
     "prettier-standard": "^16.4.1",
     "rollup": "^2.70.1",
     "sinon": "^10.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
   }
 }