feat(codepipeline-actions): support commands action (aws#31667)

### Issue # (if applicable)

Closes aws#31666.

### Reason for this change



AWS CodePipeline introduces new general purpose **compute** action: Commands action.

- https://aws.amazon.com/about-aws/whats-new/2024/10/aws-codepipeline-general-purpose-compute-action/
- https://docs.aws.amazon.com/codepipeline/latest/userguide/action-reference-Commands.html#action-reference-Commands-type

CFn docs:

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

### Description of changes



Added `CommandsAction` class and changed other files.

The `ActionCategory` for this action is a new category `Compute`, so added `ActionCategory.COMPUTE`.

### Description of how you validated changes



Both unit and integ tests

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

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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*