Add background script to retire IT Knowledge Base articles (#2013)

* Retire Articles.js

This code will help to retire the knowledge articles in bulk.

* Readme.md

Added a background script to automatically retire all published Knowledge Articles related to the IT Knowledge Base, ensuring outdated or irrelevant IT content is properly archived and improving overall knowledge base hygiene.

* Retire Articles.js

Author: at8807602

Server-Side Components/Background Scripts/Retiring KB articles in bulk/Readme.md

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+# Retire IT Knowledge Base Articles - Background Script
+
+## 📘 Overview
+This ServiceNow **Background Script** is designed to automatically retire all Knowledge Articles associated with the **IT Knowledge Base** (`kb_knowledge_base` = "IT").  
+
+It helps administrators clean up outdated or inactive articles in bulk, ensuring that end-users can only access relevant and up-to-date IT knowledge content.

Server-Side Components/Background Scripts/Retiring KB articles in bulk/Retire Articles.js

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+var article = new GlideRecord("kb_knowledge");
+article.addQuery("workflow_state","published");
+article.addQuery("kb_knowledge_base","a7e8a78bff0221009b20ffffffffff17")  // Sys ID of the IT Knowledge base. You can provide the sys Id of any knowledge base.
+article.query();
+while(article.next()){
+  article.workflow_state = "retired";
+  article.update();
+}