new background scripts to clone user groups. (#2089)

* Create cloneUserGroups.js

Added new Background script to copy groups from one user to another user

* Create readme.md

adding readme file for new background script.

Author: bgrk005

Server-Side Components/Background Scripts/Clone User Groups/cloneUserGroups.js

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+  // Replace with the sys_ids of the users
+    var sourceUserSysId = 'SOURCE_USER_SYS_ID'; // Copy groups from this user
+    var targetUserSysId = 'TARGET_USER_SYS_ID'; // Copy groups to this user
+
+    // Validate both users exist
+    var sourceUser = new GlideRecord('sys_user');
+    if (!sourceUser.get(sourceUserSysId)) {
+        gs.error('Source user not found: ' + sourceUserSysId);
+        return;
+    }
+
+    var targetUser = new GlideRecord('sys_user');
+    if (!targetUser.get(targetUserSysId)) {
+        gs.error('Target user not found: ' + targetUserSysId);
+        return;
+    }
+
+    gs.info('Cloning group memberships from ' + sourceUser.name + ' to ' + targetUser.name);
+
+    var addedCount = 0;
+    var skippedCount = 0;
+
+    var srcGroups = new GlideRecord('sys_user_grmember');
+    srcGroups.addQuery('user', sourceUserSysId);
+    srcGroups.query();
+
+    while (srcGroups.next()) {
+        var groupId = srcGroups.group.toString();
+
+        // Check if target user is already in the group
+        var existing = new GlideRecord('sys_user_grmember');
+        existing.addQuery('user', targetUserSysId);
+        existing.addQuery('group', groupId);
+        existing.query();
+
+        if (existing.next()) {
+            skippedCount++;
+            gs.info('Skipped: ' + targetUser.name + ' is already a member of group ' + srcGroups.group.name);
+            continue;
+        }
+
+        // Add target user to the group
+        var newMember = new GlideRecord('sys_user_grmember');
+        newMember.initialize();
+        newMember.user = targetUserSysId;
+        newMember.group = groupId;
+        newMember.insert();
+
+        gs.info('Added ' + targetUser.name + ' to group ' + srcGroups.group.name);
+        addedCount++;
+    }
+
+    gs.info('Group cloning complete. ' + addedCount + ' groups added, ' + skippedCount + ' skipped.');

Server-Side Components/Background Scripts/Clone User Groups/readme.md

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+This ServiceNow Background Script copies all group memberships from one user to another. It checks for duplicates and logs all actions.