feat(pipelines): allow making deployment in single step

[Hi-Fi]

Possibility to change deployment way for whole pipeline, for single stage or for single stack in stage.

Fixes #20827

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All Submissions:

• [x] Have you followed the guidelines in our Contributing guide?

Adding new Unconventional Dependencies:

• [ ] This PR adds new unconventional dependencies following the process described here

New Features

• [x] Have you added the new feature to an integration test?
  • [x] Did you use yarn integ to deploy the infrastructure and generate the snapshot (i.e. yarn integ without --dry-run)?

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

[gitpod-io[bot]]

[Hi-Fi]

@rix0rrr Does this looks something you thought at the comment at the issue?

[mergify[bot]]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[mergify[bot]]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

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• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 3f94a8daf1bee8221a46b2724ffaaef38149fce1
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