Sets up an AWS SNS topic.
When linked to a k8s-service or IAM role/user, this adds the necessary IAM permissions to publish notifications to the topic. The current permission allowed is just, “publish”. Link also grants encrypt/decrypt permission for the topic’s KMS key.
fifo- Optional. FIFO queue or not. Default False
content_based_deduplication- Optional. Duplicate content Default False
sqs_subscribers- Optional. List of SQS ARNs to push from this topic. Default 
- topic_arn - Arn of the topic jsut created