warning static method
Implementation
static Future<void> warning(String message, {String? category, String? tag, Map<String, dynamic>? metadata, bool shouldNotify = false}) async {
  if (!instance._initialized) {
    throw StateError('VooLogger must be initialized before use');
  }
  await instance._repository.warning(message, category: category, tag: tag, metadata: metadata);
  if (shouldNotify) {
    VooToast.showWarning(message: message, title: category ?? 'Warning');
  }
}