add precommit hook for linting and automatic eslint fixes + update eslint packages (#2862)

* chore: add precommit hook for eslint fixes, fix linting issues
* chore: add eslint import sort plugin

demos/setup/vue.ts

@@ -1,8 +1,10 @@
-import { createApp } from 'vue'
 import 'iframe-resizer/js/iframeResizer.contentWindow'
-import { debug, splitName } from './helper'
 import './style.scss'
 
+import { createApp } from 'vue'
+
+import { debug, splitName } from './helper'
+
 export default function init(name: string, source: any) {
   // @ts-ignore
   window.source = source