feat: Introduce AWS SQS Sink

[scarmuega]

This PR introduces a new sink that sends each event to an AWS SQS message queue.

• a new feature flag aws is added to enable the feature / dependencies
• It supports both FIFO and non-FIFO queues
• For FIFO queues, it uses a configurable message group id and the event fingerprint for the message id.
• It uses the default credentials provider chain logic as common AWS libraries (env vars, .aws/credentials, EC2 context, etc)
• the built-in retry logic of the library is used for failed requests. Max retries is configurable at the sink-level.

Known Limitations:

• SQS has a 256kb payload size limit. This is good enough for individual events, but it won't handle blocks when the include_cbor_hex option is enabled.

[rvcas]

Very cool