feat(import): add the import page, multi-select add and the favorite platform

src/App.jsx

@@ -15,6 +15,7 @@ import GameDetail from './pages/GameDetail.jsx';
 import WishlistPage from './pages/WishlistPage.jsx';
 import PlayNextPage from './pages/PlayNextPage.jsx';
 import StatsPage from './pages/StatsPage.jsx';
+import ImportPage from './pages/ImportPage.jsx';
 import PublicProfilePage from './pages/PublicProfilePage.jsx';
 import AppHeader from './components/AppHeader.jsx';
 import {Toaster} from '@/components/ui/sonner';
@@ -72,6 +73,7 @@ function App() {
                         <Route path="/wishlist" element={<WishlistPage/>}/>
                         <Route path="/play-next" element={<PlayNextPage/>}/>
                         <Route path="/stats" element={<StatsPage/>}/>
+                        <Route path="/import" element={<ImportPage/>}/>
                         <Route path="/u/:name" element={<PublicProfilePage/>}/>
                         <Route path="/settings" element={<SettingsPage/>}/>
                         <Route path="/admin/users" element={<AdminUsersPage/>}/>