sample: add turbo replication samples

[ddelgrosso1]

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Fixes #1649 🦕

[generated-files-bot]

Warning: This pull request is touching the following templated files:

• README.md - README.md is managed by synthtool. However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/main/.readme-partials.yaml
• samples/README.md - samples/README.md is managed by synthtool. However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/main/.readme-partials.yaml

[snippet-bot]

Here is the summary of changes.

You are about to add 4 region tags.

• samples/createBucketWithTurboReplication.js:26, tag storage_create_bucket_turbo_replication
• samples/getRPO.js:24, tag storage_get_rpo
• samples/setRPOAsyncTurbo.js:24, tag storage_set_rpo_async_turbo
• samples/setRPODefault.js:24, tag storage_set_rpo_default

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[shaffeeullah]

Does it make sense to also add this value to the getMetadata sample?

[JustinBeckwith]

Instead of catching like this, please remove the .catch, and add this at the end:

process.on('unhandledRejection', err => {
  console.error(err.message);
  process.exitCode = 1;
});
main(...process.argv.slice(2));

This follows the sample standards we've laid out elsewhere.

[ddelgrosso1]

Thanks @JustinBeckwith I'll make a ticket to update the other tests to this format as most in this repo are doing .catch(console.error)

[JesseLovelace]

This sample is called "create bucket with turbo replication", however it takes in rpo as a parameter, meaning theoretically you could set the rpo to whatever you want, for example DEFAULT, and then the sample wouldn't do what it's saying.

To make this clearer, wouldn't it be better to create a local variable named rpo and set it to ASYNC_TURBO, as part of the sample rather than as an argument? I know that you do that as a commented out line, but it might be clearer what this sample is communicating if it's hard-coded in

[ddelgrosso1]

Good call. I will change this.

[JesseLovelace]

Would "enableTurboReplication()" be a better name?

[ddelgrosso1]

I originally had a name somewhat similar to that but TW thought this was a better name (see comments in the canonical sample document).

[JesseLovelace]

Would "disableTurboReplication()" be a better name?

[ddelgrosso1]

Same comment as above.