Change close reminder business rule (ServiceNowDevProgram#1933)

* Create change_close_reminder.js

This Business Rule automatically prepares an email reminder for Change Requests that are about to close.
When triggered, it dynamically builds a clear and actionable subject and body message to alert users that the Change Request is nearing closure.

* Create README.md

This Business Rule automatically prepares an email reminder for Change Requests that are about to close.
When triggered, it dynamically builds a clear and actionable subject and body message to alert users that the Change Request is nearing closure.

* Update README.md

This Business Rule automatically generate a reminder message for Tasks that are approaching their closure time.

* Update README.md

Author: Rampriya-S

Server-Side Components/Business Rules/README.md

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+About this script : 
+
+Type: Before Business Rule
+Table: Reminder [reminder]
+When: Before Insert or Update
+
+This Business Rule automatically generate a reminder message for Tasks that are approaching their closure time.
+It dynamically fills in the Subject, Notes, and Using fields with a formatted message, ensuring consistent and timely communication.
+
+What it does :
+It retrieves the Task number from the task field.
+It reads the reminder time (remind_me) to know how many minutes before closure the reminder should be sent.
+It builds a subject line like:
+
+“Change Request CHG001234 Closure Approaching in 30 Minutes”
+
+It builds a message body explaining the reminder details.
+It automatically sets:
+subject → reminder subject line
+notes → reminder message body
+using → "outlook" (indicating reminder channel)
+
+Use of this script :
+This automation ensures that Change Managers and implementers are reminded before a Change Request closes, reducing the risk of:
+Missing required closure tasks
+Incomplete validations or documentation
+Unnotified team members before system changes finalize
+
+
+Please find the screenshots attached for clarity.
+<img width="1562" height="671" alt="image" src="https://github.com/user-attachments/assets/5c8db22f-4297-47e5-a76d-764f033329f2" />
+<img width="1500" height="572" alt="image" src="https://github.com/user-attachments/assets/74753ba0-38e6-4125-9396-435e205e6230" />
+
+

Server-Side Components/Business Rules/change_close_reminder.js

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+(function executeRule(current, previous /*null when async*/) {
+
+    var tsk_number = current.getDisplayValue('task'); // Get Change Request number
+    var time = current.getValue('remind_me'); // Reminder time in minutes
+
+    var subject = 'Change Request ' + tsk_number + ' Closure Approaching in ' + time + ' Minutes';
+    var body = 'This is a reminder that Change Request ' + tsk_number +
+        ' is scheduled to close in ' + time + ' minutes. Please ensure that all necessary ' +
+        'tasks, validations, and documentation are completed before the closure.';
+
+    current.setValue('subject', subject);
+    current.setValue('notes', body);
+    current.setValue('using', 'outlook');
+
+})(current, previous);