Await output streams

[alcuadrado]

This PR fixes a race condition that we had when piping readable streams into stdout.

It introduces a utility that creates a Writable based on another Writable, which "pipes" everything to the latter, but without closing it.

This allows us to pipe readable into a writable and await for all the writes to complete.

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Name	Status	Preview	Comments	Updated (UTC)
hardhat	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 28, 2024 8:31pm

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Latest commit: 742556b

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