Add Commitments to Offerings

[AAladeen]

PR Description:

This BG script loops throw all services and offerings in defined Service Portfolio and add Commitments selected in the array. The Names of these Commitments are first checked for existence. The script offers Dry Run capability to check how many updates will it perform. It can be easily tweaked to run it not on All services in portfolio, but for each service, when we need different commitments on some services/offerings.

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)

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Documentation

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• My PR does not include changes that fall outside the described scope

[github-actions]

Thank you for your contribution. However, it doesn't comply with our contributing guidelines.

As a reminder, the general requirements (as outlined in the CONTRIBUTING.md file) are the following: follow the folder+subfolder guidelines and include a README.md file explaining what the code snippet does.

Validation errors:

Folder structure violations found:
 - Move 'Server-Side Components/Background Scripts/Add Commitments to Offerings' under a valid folder hierarchy (Category/Subcategory/Use-Case/your-file). Files directly inside 'Server-Side Components' or its subcategories are not allowed.
 - Move 'Server-Side Components/Business Rules/README.md' under a valid folder hierarchy (Category/Subcategory/Use-Case/your-file). Files directly inside 'Server-Side Components' or its subcategories are not allowed.

Review your contribution against the guidelines and make the necessary adjustments. Closing this for now. Once you make additional changes, feel free to re-open this Pull Request or create a new one.