dead letter queue support

I want to be able to send failed lambda events to an sqs queue for later processing, a la https://docs.aws.amazon.com/lambda/latest/dg/dlq.html . Is this possible in chalice?

The issue names AWS Lambda dead-letter queues and SQS but no repository file, test, or entry point. Start with the linked AWS Lambda DLQ documentation and Chalice's Lambda configuration; determine the required configuration surface and verify that failed events can be routed to SQS. Done means Chalice supports the requested configuration with documented behavior and coverage.

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