Merged Ombase's changes in main branch from frontend branch.

- Landing page
- Login page
- Sign-up page

Frontend/src/App.jsx

@@ -0,0 +1,22 @@
+import "./App.css";
+import DrivethruLandingPage from "./pages/DrivethruLandingPage";
+import { BrowserRouter as Router, Routes, Route } from "react-router-dom";
+import Login from "./pages/Authentication/Login";
+import SignUp from "./pages/Authentication/SignUp";
+
+function App() {
+  return (
+    <Router>
+      <Routes>
+        {/* Landing Page at root ("/") */}
+        <Route path="/" element={<DrivethruLandingPage />} />
+
+        {/* Login Page at "/login" */}
+        <Route path="/login" element={<Login />} />
+        <Route path="/signup" element={<SignUp />} />
+      </Routes>
+    </Router>
+  );
+}
+
+export default App;