DLP: Added sample for k anonymity with entity ID and deidentify cloud storage

[dinesh-crest]

Added unit test cases for same

Description

References:- https://cloud.google.com/dlp/docs/deidentify-storage#code-example
https://cloud.google.com/dlp/docs/visualizing_re-id_risk.md?g=0&l=119#step_1_calculate_k-anonymity_on_the_dataset

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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)
• 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

[snippet-bot]

Here is the summary of changes.

You are about to add 2 region tags.

• dlp/deIdentifyCloudStorage.js:31, tag dlp_deidentify_cloud_storage
• dlp/kAnonymityWithEntityIds.js:22, tag dlp_k_anonymity_with_entity_id

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[annadata]

Please address the minor review comments.

[kweinmeister]

@dinesh-crest please fix merge conflicts.

@annadata this particular file has merge conflicts very frequently. maybe we can think about how we change this file to avoid these in the future, or split the test file.

[pattishin]

@dinesh-crest Whenever you have some time, could you resolve the file conflicts that are popping up?