4 API response helpers

[mwarman]

📢 Instructions

• Begin with a DRAFT pull request.
• Follow italicized instructions to add detail to assist the reviewers.
• After completing all checklist items, change the pull request to READY.

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🔧 Change Summary

Describe the changes included in this pull request. Link to the associated GitHub or Jira issue(s).

• see API response helpers #4
• Added API response helper utilities.
• Updated project documentation.

📝 Checklist

Pull request authors must complete the following tasks before marking the PR as ready to review.

• Complete a self-review of changes
• Unit tests have been created or updated
• The code is free of [new] lint errors and warnings
• Update project documentation as needed: README, /docs, JSDoc, etc.

🧪 Steps to Test

Describe the process to test the changes in this pull request.

1. Update the Lambda Starter application to use the API response utilities.
2. Deploy to AWS.
3. Perform a full regression test.

🔗 Additional Information

Optionally, provide additional details, screenshots, or URLs that may assist the reviewer.

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