add devcontainer configuration and update App.tsx to include network settings

.devcontainer/devcontainer.json

@@ -0,0 +1,22 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/typescript-node
+{
+	"name": "Node.js & TypeScript",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/typescript-node:1-22-bookworm"
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

src/App.tsx

@@ -1,5 +1,6 @@
 import { BrowserRouter as Router, Routes, Route } from 'react-router-dom';
 import { AppKitProvider } from '@reown/appkit/react'; // Importa correctamente el provider
+import { mainnet, polygon, arbitrum, sepolia } from '@reown/appkit/networks';
 import Layout from './components/Layout';
 import Index from './pages/Index';
 import About from './pages/About';
@@ -17,6 +18,8 @@ function App() {
     <AppKitProvider
       projectId="ced40e4d52234c471808977208586c7e"
       theme="dark"
+      networks={[mainnet, polygon, arbitrum, sepolia]}
+      defaultNetwork={mainnet}
       locale={["en", "es", "fr", "zh", "hi", "pt", "ja", "ar"]} // Idiomas oficiales
     >
       <Router>