perf: 使用placeholder增加自定义面板的提示

web/plugins/com.msgbyte.webview/src/index.tsx

@@ -16,7 +16,12 @@ regGroupPanel({
   label: Translate.customwebpanel,
   provider: PLUGIN_NAME,
   extraFormMeta: [
-    { type: 'textarea', name: 'html', label: Translate.htmlcode },
+    {
+      type: 'textarea',
+      name: 'html',
+      label: Translate.htmlcode,
+      placeholder: Translate.customwebpanelPlaceholder,
+    },
   ],
   render: Loadable(() => import('./group/GroupCustomWebPanelRender'), {
     componentName: 'com.msgbyte.webview:GroupCustomWebPanelRender',

web/plugins/com.msgbyte.webview/src/translate.ts

@@ -6,6 +6,10 @@ export const Translate = {
     'zh-CN': '自定义网页面板',
     'en-US': 'Custom Webview Panel',
   }),
+  customwebpanelPlaceholder: localTrans({
+    'zh-CN': '建议在第三方页面编辑完毕后粘贴到此处',
+    'en-US': 'Recommended to paste it here after editing the third-party page',
+  }),
   notfound: localTrans({
     'zh-CN': '加载失败, 面板信息不存在',
     'en-US': 'Loading failed, panel info does not exist',