feat(background-script): Overhaul duplicate report output for clarity and actionability

[JohanDC-1999]

PR Description:

This pull request enhances the usability and effectiveness of the duplicate combination script.

Key changes include:

• Structured Output: The script's log output has been refactored into a clear, multi-line report for improved readability.
• Record Identification: A secondary query has been implemented to retrieve and display the sys_id for each duplicate record.

This enhancement streamlines the process of identifying and remediating duplicate records, reducing administrative effort and improving data quality.

Pull Request Checklist

Overview

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• I have read and understood the CONTRIBUTING.md guidelines
• My pull request has a descriptive title that accurately reflects the changes and the description has been filled in above.
• I've included only files relevant to the changes described in the PR title and description
• I've created a new branch in my forked repository for this contribution

Code Quality

• My code is relevant to ServiceNow developers
• My code snippets expand meaningfully on official ServiceNow documentation (if applicable)
• I've disclosed use of ES2021 features (if applicable)
• I've tested my code snippets in a ServiceNow environment (where possible)

Repository Structure Compliance

• I've placed my code snippet(s) in one of the required top-level categories:
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  • Server-Side Components/
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Documentation

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Restrictions

• My PR does not include XML exports of ServiceNow records
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• My PR does not include changes that fall outside the described scope

[ravichandra1998g]

looks good, Thank you for the detailed readme file.