feat: Initial Laravel API-only starter kit

- Laravel 12 with Sanctum authentication
- API versioning with grazulex/laravel-apiroute
- spatie/laravel-query-builder for filtering/sorting
- spatie/laravel-data for DTOs
- dedoc/scramble for auto API documentation
- Pest PHP testing framework
- Docker development environment
- Standardized JSON API responses
- Rate limiting and CORS configuration
- Comprehensive README documentation

.gitattributes

@@ -0,0 +1,11 @@
+* text=auto eol=lf
+
+*.blade.php diff=html
+*.css diff=css
+*.html diff=html
+*.md diff=markdown
+*.php diff=php
+
+/.github export-ignore
+CHANGELOG.md export-ignore
+.styleci.yml export-ignore