SQS span extraction - fallback on AttributeValue if Value is undefined

[leejayhsu]

What does this PR do?

this attempts to fix trace propagation between an SNS producer and SQS consumer. Since the sns plugin is setting the _datadog attribute with a BinaryValue property here, it seems good to check for this property on the sqs side.

Motivation

trace propagation not working for me when publishing with sns and consumer is sqs.

as a workaround, I am currently doing this to propagate between sns and sqs

const datadogAttribute = message.MessageAttributes._datadog
const buffer = Buffer.from(datadogAttribute.BinaryValue, 'base64')
const parsedAttributes = JSON.parse(buffer)
tracer.extract('text_map', parsedAttributes)

Additional Notes

no additional notes