feat: add loading

web/app/components/plugins/install-plugin/install-bundle/item/loading.tsx

@@ -1,10 +1,21 @@
 'use client'
 import React from 'react'
+import Placeholder from '../../../card/base/placeholder'
+import Checkbox from '@/app/components/base/checkbox'
 
 const Loading = () => {
   return (
-    <div>
-      Loading...
+    <div className='flex items-center space-x-2'>
+      <Checkbox
+        className='shrink-0'
+        checked={false}
+        disabled
+      />
+      <div className='grow relative p-4 pb-3 border-[0.5px] border-components-panel-border bg-components-panel-on-panel-item-bg hover-bg-components-panel-on-panel-item-bg rounded-xl shadow-xs'>
+        <Placeholder
+          wrapClassName='w-full'
+        />
+      </div>
     </div>
   )
 }