feat: Ajout de React pour le front, début de refonte du front

assets/react/app/presentation/components/Layout/Layout.jsx

@@ -0,0 +1,26 @@
+import React, { useState } from 'react';
+import { Header } from '../Header';
+import { Sidebar } from '../Sidebar';
+
+export function Layout({ children, onMangaClick, onAddMangaClick }) {
+  const [isSidebarOpen, setIsSidebarOpen] = useState(false);
+
+  return (
+    <div className="min-h-screen bg-gray-50">
+      <Header 
+        onMenuClick={() => setIsSidebarOpen(!isSidebarOpen)} 
+        onMangaClick={onMangaClick}
+        onAddMangaClick={onAddMangaClick}
+      />
+      <Sidebar 
+        isOpen={isSidebarOpen} 
+        onClose={() => setIsSidebarOpen(false)}
+        onAddMangaClick={onAddMangaClick}
+      />
+      
+      <main className="pt-16 md:ml-60">
+        {children}
+      </main>
+    </div>
+  );
+}