chore: add private attribute

Author: luthfimasruri

package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "version": "0.0.0-development",
   "description": "Vue 3 rich text editor",
   "homepage": "https://vueup.github.io/vue-quill/",
@@ -92,4 +93,4 @@
     "zlib": "^1.0.5"
   },
   "dependencies": {}
-}
+}