feat: initialize project with Symfony, React, and Tailwind CSS setup

- Add package.json with development and production dependencies
- Create postcss.config.js for Tailwind CSS integration
- Implement AdminController for handling admin routes
- Add admin index template with React root element
- Create base template for consistent layout
- Configure TypeScript with tsconfig.json
- Set up Webpack configuration for asset management

config/bundles.php

@@ -10,4 +10,8 @@ return [
     Symfony\Bundle\DebugBundle\DebugBundle::class => ['dev' => true],
     Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
     Nelmio\ApiDocBundle\NelmioApiDocBundle::class => ['all' => true],
+    Symfony\UX\StimulusBundle\StimulusBundle::class => ['all' => true],
+    Symfony\UX\React\ReactBundle::class => ['all' => true],
+    Symfony\WebpackEncoreBundle\WebpackEncoreBundle::class => ['all' => true],
+    Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],
 ];