Display Info Message of Incident Count of Assigned-To user when Field Assigned-To changes

[zakir8992]

PR Description:

Displays a message showing the count of open incidents assigned to a user whenever the Assigned To field changes on the Incident form. Uses an onChange Client Script on the Assigned-To field and a GlideAjax Script Include called from the client script to fetch the count of incident.

Pull Request Checklist

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[ravichandra1998g]

looks good to me