fix(logs): Apply tags to log retention Lambda

[jamesorlakin]

This hopefully fixes #15032 by implementing the ITaggable interface on the custom construct and then applying discovered tags to the underlying CfnResource.

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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

[gitpod-io]

[rix0rrr]

Hi @jamesorlakin, I changed your PR a bit to improve the programming experience for you and other people going forward (by removing the use of prepare()--it shouldn't be necessary).

However, I am unable to push my change back to your branch in order to merge it:

Do you have Allow edits from maintainers switched off by any chance?

[rix0rrr]

Please cherry-pick commit c1fd7969c into this PR

[rix0rrr]

Nevermind I figured it out

Pull request has been modified.

[mergify]

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

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildProject89A8053A-LhjRyN9kxr8o
• Commit ID: 76a1abb
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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[mergify]

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

[jamesorlakin]

Thanks @rix0rrr, your solution is definitely snazzier than mine!