feat: /titles page with search and sort functionality. Website header added

modules/frontend/src/App.tsx

@@ -2,10 +2,13 @@ import React from "react";
 import { BrowserRouter as Router, Routes, Route } from "react-router-dom";
 import UserPage from "./pages/UserPage/UserPage";
 import TitlesPage from "./pages/TitlesPage/TitlesPage";
+import { Header } from "./components/Header/Header";
 
 const App: React.FC = () => {
+  const username = "nihonium";
   return (
     <Router>
+      <Header username={username} />
       <Routes>
         <Route path="/users/:id" element={<UserPage />} />
         <Route path="/titles" element={<TitlesPage />} />