feat: Initialize Symfony application structure with essential files

- Added index.php for application entry point.
- Created app.css for global styles.
- Introduced HomeController for handling the home route.
- Implemented Kernel class for application kernel.
- Added base.html.twig as the main template.
- Created index.html.twig for the home page layout.
- Set up Docker configurations for development and production environments.
- Included opcache configuration for development.

Dockerfile

@@ -0,0 +1,19 @@
+FROM dunglas/frankenphp:php8.4
+
+RUN apt-get update && apt-get install -y --no-install-recommends git unzip && rm -rf /var/lib/apt/lists/*
+
+RUN install-php-extensions intl pdo_sqlite zip
+
+COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
+
+WORKDIR /app
+
+# Copy dep manifests first — only reinstalls when these change
+COPY app/composer.json app/composer.lock ./
+RUN composer install --no-interaction --prefer-dist --no-dev --no-scripts
+
+# Copy source and refresh autoloader with actual class paths
+COPY app/ ./
+RUN composer dump-autoload --optimize --no-dev
+
+EXPOSE 80