[8.x](backport #40699) Add asynchronous ACK handling to S3 and SQS inputs

[mergify]

Modify SQS ingestion to listen for ACKs asynchronously so that input workers can keep reading new objects after a previous one has been published, instead of blocking on full upstream ingestion. This addresses the bottleneck where ingesting many small objects is slow as each one waits for a full ingestion round trip.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

How to test this PR locally

This can best be tested by ingesting data from a live S3 or SQS queue. The scenario that most highlights the changed performance is ingesting many small individual objects.

Related issues

• Closes aws-s3 input workers shouldn't wait for objects to be fully ingested before starting the next object #39414

  ---

  This is an automatic backport of pull request Add asynchronous ACK handling to S3 and SQS inputs #40699 done by Mergify.

[mergify]

Cherry-pick of d2867fd has failed:

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Changes to be committed:
	modified:   CHANGELOG.next.asciidoc
	modified:   NOTICE.txt
	modified:   go.mod
	modified:   go.sum
	modified:   x-pack/filebeat/_meta/config/filebeat.inputs.reference.xpack.yml.tmpl
	modified:   x-pack/filebeat/docs/inputs/input-aws-s3.asciidoc
	modified:   x-pack/filebeat/filebeat.reference.yml
	new file:   x-pack/filebeat/input/awss3/acks.go
	modified:   x-pack/filebeat/input/awss3/config.go
	modified:   x-pack/filebeat/input/awss3/config_test.go
	modified:   x-pack/filebeat/input/awss3/input_integration_test.go
	modified:   x-pack/filebeat/input/awss3/interfaces.go
	modified:   x-pack/filebeat/input/awss3/mock_interfaces_test.go
	modified:   x-pack/filebeat/input/awss3/s3.go
	modified:   x-pack/filebeat/input/awss3/s3_input.go
	modified:   x-pack/filebeat/input/awss3/s3_objects.go
	modified:   x-pack/filebeat/input/awss3/s3_objects_test.go
	modified:   x-pack/filebeat/input/awss3/s3_test.go
	modified:   x-pack/filebeat/input/awss3/sqs_input.go
	modified:   x-pack/filebeat/input/awss3/sqs_s3_event.go
	modified:   x-pack/filebeat/input/awss3/sqs_test.go
	modified:   x-pack/filebeat/module/aws/_meta/config.yml
	modified:   x-pack/filebeat/module/aws/cloudtrail/config/aws-s3.yml
	modified:   x-pack/filebeat/module/aws/cloudtrail/manifest.yml
	modified:   x-pack/filebeat/module/aws/s3access/config/aws-s3.yml
	modified:   x-pack/filebeat/module/aws/s3access/manifest.yml
	modified:   x-pack/filebeat/module/aws/vpcflow/config/input.yml
	modified:   x-pack/filebeat/module/aws/vpcflow/manifest.yml
	modified:   x-pack/filebeat/modules.d/aws.yml.disabled

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   x-pack/filebeat/input/awss3/input_benchmark_test.go
	both modified:   x-pack/filebeat/input/awss3/sqs_s3_event_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[botelastic]

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