Add asset import/export and local dev server setup

- Configure Vite dev server with localhost binding and public asset proxy
- Add npm scripts for concurrent Laravel/Vite development (dev:local, dev:test)
- Implement asset import/export in ACP via ZIP file upload/download
- Create AssetController for asset management endpoints
- Add asset management UI tab in admin panel

vite.config.js

@@ -63,6 +63,18 @@ export default defineConfig({
         },
     },
     server: {
+        host: '127.0.0.1',
+        port: 5173,
+        proxy: {
+            '/images': {
+                target: 'http://127.0.0.1:8000',
+                changeOrigin: true,
+            },
+            '/storage': {
+                target: 'http://127.0.0.1:8000',
+                changeOrigin: true,
+            },
+        },
         watch: {
             ignored: ['**/storage/framework/views/**'],
         },