chore: migrate assessed sample as requested by techwriting

[Shabirmean]

Description

• This PR is related to an earlier PR: samples: migrate code from googleapis/nodejs-dlp #3035
• The earlier PR migrated samples from the nodejs-dlp repository to this mono-samples repository
• However, one sample and its resources were left behind since it was not referenced anywhere
• Upon assessing the sample the request from the Eng, DEE, and TW teams is migrate this sample as well and get it referenced.
• Thus, the resources removed in commits ad775a1 and 2fb1355 of the original migration PR are added back in, in this PR

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• dlp/redactText.js:22, tag dlp_redact_text

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