+ Add support for Symfony 8

• Add php 8.2 for minimum version (remove php 7.4)
• PHP 8.2 improvements: readonly class, constructor property promotion, readonly properties
• Add TurnstileType unit tests
• Add German, Italian and Spanish translations
• Use booleanNode instead of scalarNode for enable configuration option
• Add final keyword to Configuration, PixelOpenCloudflareTurnstileCompilerPass and PixelOpenCloudflareTurnstileExtension classes