feat(codepipeline): auto rollback for pipeline

[go-to-k]

WIP: waiting for CFn and the L1 props. see #30083 (comment).

I'm also wondering if we should provide the property as per CFn or have a boolean type like a autoRollback. I think customizing it for CDK is a good design, but given the recent CodePipeline trend and its CFn structure, there may be extensions to this in the future. (I've pushed a commit to add a property with the same structure as CFn simply for the record now.)

Issue # (if applicable)

Closes #30083.

Reason for this change

https://aws.amazon.com/jp/about-aws/whats-new/2024/04/aws-codepipeline-stage-level-manual-automated-rollback/

https://docs.aws.amazon.com/codepipeline/latest/userguide/stage-rollback-auto.html

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-codepipeline-pipeline-stagedeclaration.html

https://docs.aws.amazon.com/codepipeline/latest/APIReference/API_StageDeclaration.html

Description of changes

Description of how you validated changes

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

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