feat(storage): migrate bucket lock samples and tests

[angelcaamal]

Description

Fixes #

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Checklist

• I have followed guidelines from CONTRIBUTING.MD and Samples Style Guide
• Tests pass: npm test (see Testing)
• Lint pass: npm run lint (see Style)
• Required CI tests pass (see CI testing)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This pull request is from a branch created directly off of GoogleCloudPlatform/nodejs-docs-samples. Not a fork.
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new sample directory, and I created GitHub Actions workflow for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

Note: Any check with (dev), (experimental), or (legacy) can be ignored and should not block your PR from merging (see CI testing).

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly expands the Google Cloud Storage Node.js samples by adding a suite of examples for managing bucket lock features. These new samples provide clear demonstrations of how to programmatically control data retention and immutability policies on buckets and objects, which is crucial for compliance and data governance. The accompanying system tests ensure that these new functionalities work as expected within the cloud environment.

Highlights

• New Bucket Lock Samples: Introduced a comprehensive set of new Node.js samples demonstrating various Google Cloud Storage bucket lock operations, including enabling/disabling default event-based holds, setting/getting/removing/locking retention policies, and setting/releasing event-based and temporary holds on objects.
• System Tests for Bucket Lock: Added dedicated system tests to validate the functionality of all new bucket lock samples, ensuring their correctness and reliability.
• Dependency Updates and Utility Scripts: Updated project dependencies in package.json and included a new cleanup script to manage and remove resources created during sample execution and testing.

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[gemini-code-assist]

Code Review

This pull request adds a comprehensive set of samples and tests for Cloud Storage Bucket Lock features. The changes are well-structured. I've found a few issues to address:

• The cleanup script can be improved for readability and correctness by using modern async/await syntax.
• The system tests have a potential race condition in the cleanup hook that could lead to resource leaks.
• Several samples that accept an optional metagenerationMatchPrecondition have an incorrect default value, which would cause unexpected failures for users.

[snippet-bot]

Here is the summary of changes.

You are about to add 11 region tags.

• storage/disableDefaultEventBasedHold.js:26, tag storage_disable_default_event_based_hold
• storage/enableDefaultEventBasedHold.js:26, tag storage_enable_default_event_based_hold
• storage/getDefaultEventBasedHold.js:26, tag storage_get_default_event_based_hold
• storage/getRetentionPolicy.js:26, tag storage_get_retention_policy
• storage/lockRetentionPolicy.js:26, tag storage_lock_retention_policy
• storage/releaseEventBasedHold.js:30, tag storage_release_event_based_hold
• storage/releaseTemporaryHold.js:30, tag storage_release_temporary_hold
• storage/removeRetentionPolicy.js:26, tag storage_remove_retention_policy
• storage/setEventBasedHold.js:30, tag storage_set_event_based_hold
• storage/setRetentionPolicy.js:26, tag storage_set_retention_policy
• storage/setTemporaryHold.js:30, tag storage_set_temporary_hold

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