Feature/new business rule

[HackoDev1530]

PR Description: Add a new business rules folder called 'Validate Checklist items'

Pull Request Checklist

Overview

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

Code Quality

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

Repository Structure Compliance

• [ ]X I've placed my code snippet(s) in one of the required top-level categories:
  • Core ServiceNow APIs/
  • Server-Side Components/
  • Client-Side Components/
  • Modern Development/
  • Integration/
  • Specialized Areas/
• [ X] I've used appropriate sub-categories within the top-level categories
• [ X] Each code snippet has its own folder with a descriptive name

Documentation

• [ X] I've included a README.md file for each code snippet
• [ X] The README.md includes:
  • Description of the code snippet functionality
  • Usage instructions or examples
  • Any prerequisites or dependencies
  • (Optional) Screenshots or diagrams if helpful

Restrictions

• [X ] My PR does not include XML exports of ServiceNow records
• [ X] My PR does not contain sensitive information (passwords, API keys, tokens)
• [ X] My PR does not include changes that fall outside the described scope

[HackoDev1530]

Added a before update business rule script.

[WillemZeiler]

Thank you for your contribution. However, this submission is not relevant to this repository. We encourage contributors to review the project's objectives and guidelines (see the README.md and CONTRIBUTING.md files) before submitting pull requests.
Your code refers to custom components, like a custom table. That makes in not applicable to other developers. Try describe the business rule better and make it applicable to other environments as well.
Closing this for now. Once you make additional changes, feel free to re-open this Pull Request or create a new one.