feat: Add Business Rule snippet for close code validation

[arjav007]

Hello! This PR contributes a new, common code snippet for a server-side validation.

Description This snippet adds a 'before' Business Rule designed for the incident table. Its purpose is to prevent a record from being saved in the 'Closed' state if the 'Close Code' field is empty, which is a very common business requirement.

Functionality

Triggers on a before update, when the State changes to Closed.

Checks if the current.close_code field is empty.

If it's empty, it displays a friendly error message to the user using gs.addErrorMessage().

Stops the database update using current.setAbortAction(true).

Contribution Checklist

[x] Snippet placed in the correct category: Server-Side Components/Business Rules/Prevent-Invalid-State-Change/

[x] Includes a README.md inside the snippet folder with clear setup instructions.

[x] Follows all CONTRIBUTING.md guidelines.

Thank you for the opportunity to contribute! Happy Hacktoberfest! 🎃

[ravichandra1998g]

Hello @arjav007
At Hacktoberfest, we’re aiming for high-quality contributions providing real-world developer usecases. You can check some of the recently merged code snippets for reference. They are good examples of what we're aiming for. This cannot be merged since this is a very simple low effort business rule.

We appreciate the effort you’ve put into this contribution. We’ve labeled it as hacktoberfest-accepted so it still counts toward your Hacktoberfest progress.

Thank you for contributing!

Please Do not submit low effort PRs

Please submit a new PR after adding more dynamic context/use cases that are more suitable for the Hactoberfest