LoadSNSConfigFromEnv will attempt to load the SNSConfig struct from environment variables.

LoadSQSConfigFromEnv will attempt to load the SQSConfig struct from environment variables.

NewPublisher will initiate the SNS client.

NewSubscriber will initiate a new Decrypter for the subscriber if a key file is provided.

WithMessageAttributes used to add SNS Message Attributes to the context for further usage in publishing messages to sns with provided attributes.