chore(cdk-build-tools): add missing cdk-compat bin

[jogold]

Without it the bin is not hoisted to node_modules/.bin and cannot be called from
individual package directories.

---

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[mergify]

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[jogold]

@eladb no code owner here? For you this one I presume.

[mergify]

Thank you for contributing! Your pull request is now being automatically merged.

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