added react router (p4/8) done for lab

labs/lab7/src/main.tsx

@@ -0,0 +1,31 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+
+import {
+  createBrowserRouter,
+  RouterProvider,
+} from "react-router-dom";
+
+
+
+const router = createBrowserRouter([
+  {
+    path: "",
+    element: <Main />,
+  },
+  {
+    path: "/list",
+    element: <List />,
+  },
+]);
+
+
+import  List  from "./list/List";
+import  Main  from "./main/Main";
+
+import './styles/index.css'
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <RouterProvider router={router} />
+  </StrictMode>,
+)