feat(wip): html and elements state

ui/src/App.jsx

@@ -1,3 +1,4 @@
+import { useState } from 'react';
 import Topbar from "./components/Topbar";
 import Sidebar from "./components/Sidebar";
 import WebPreview from "./components/WebPreview";
@@ -5,6 +6,9 @@ import { ConfigProvider } from 'antd';
 import { BrowserRouter } from 'react-router-dom'
 
 const App = () => (
+  const [html, setHtml] = useState(null);
+  const [elements, setElements] = useState([])
+
   <ConfigProvider
     theme={{
       token: {