5 Configuration utility

[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 Configuration utility #5
• Added the Configuration Manager utility which validates, parses, and returns the environment variables configuration for a Lambda function sourced from process.env.
• 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. Implement the configuration utility in the Lambda Starter project.
2. Deploy to AWS and regression test.

🔗 Additional Information

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

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