Add server configuration to Astro setup for external access

- Introduce server settings in astro.config.ts to specify port 3000 and enable external access.
- This change enhances the development environment by allowing connections from outside the local network.

astro.config.ts

@@ -26,6 +26,10 @@ export default defineConfig({
   output: 'server',
   adapter: node({ mode: 'standalone' }),
   
+  server: {
+    port: 3000,
+    host: true, // Allows external access if needed
+  },
 
   i18n: {
     locales: ["en", "de", "nl", "fr"],