targz_edit: modify contents of targz

[dmitrii-ubskii]

What is the goal of this PR?

We introduce targz_edit(), a rule that allows us to modify a targz. Currently, this rule only supports the strip_components argument.

[vaticle-bot]

PR Review Checklist

Do not edit the content of this comment. The PR reviewer should simply update this comment by ticking each review item below, as they get completed.

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Trivial Change

• [x] This change is trivial and does not require a code or architecture review.

Code

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• [ ] The code is canonical and the minimum required to achieve the goal.
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Architecture

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