Feature/pdf generator (#2388)

* Add README for PDF generation using PDFGenerationAPI

* Add PDF generation for related incidents

Implement PDF generation for incidents related to a change request using ServiceNow's PDFGenerationAPI.

* Update README with example image for PDF generation

Added example image to README for PDF generation.

* Add introduction section to PDF generation README

Added an introduction section to the README for clarity.

Author: HackoDev1530

Client-Side Components/UI Actions/Generate a PDF/README.md

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+# Introduction
+Generating a PDF using PDFGenerationAPI
+Calling an OOTB convertToPDFWithHeaderFooter() method to generate a PDF with your header and footer.
+PDFGenerationAPI – convertToPDFWithHeaderFooter(String html, String targetTable, String targetTableSysId, String pdfName, Object headerFooterInfo, String fontFamilySysId, Object documentConfiguration)
+
+# Example:
+<img width="704" height="496" alt="image" src="https://github.com/user-attachments/assets/9d086ee3-db76-482d-ab11-4b0540a5e2fb" />
+

Client-Side Components/UI Actions/Generate a PDF/serverscript.js

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+//Table: Change Request
+// UI action button on the change form that exports all the related incidents into a PDF format.
+//ServiceNows PDFGenerationAPI allows you to customize the page size, header, footer, header image, page orientation, and more.
+
+var inc = new GlideRecord('incident'),
+    incidentsList = [],
+    v = new sn_pdfgeneratorutils.PDFGenerationAPI,
+    html = '',
+    hfInfo = new Object(),
+    result;
+inc.addQuery('rfc', current.sys_id);
+inc.query();
+while (inc.next()) {
+    incidentsList.push(inc.number);
+    incidentsList.push(inc.getDisplayValue('caller_id')); 
+    incidentsList.push(inc.getDisplayValue('category'));
+    incidentsList.push(inc.getDisplayValue('subcategory'));
+    incidentsList.push(inc.getValue('priority')); 
+    incidentsList.push(inc.getValue('short_description')); 
+    incidentsList.push(inc.getValue('description')); 
+    incidentsList.push(inc.getDisplayValue('assignment_group')); 
+}
+var json = {    
+    incidents: incidentsList.toString()
+};
+
+ JSON.stringify(json);
+html = '<h1 style="margin: 0in; text-align: center; line-height: 107%; break-after: avoid; font-size: 20pt; font-family: Calibri Light, sans-serif; color: #2e74b5; font-weight: normal;" align="center"><strong><span style="font-size: 16.0pt; line-height: 107%; font-family: Arial Narrow, sans-serif; color: #002060;">Incidents Related to the Change: ' + current.number + ' </span></strong></h1><br>';
+
+
+html += '<div style="width: 100%"><p><strong><span style="font-size: 11pt; font-family: Arial Arrow; color: #002060;">Incidents List</span><span style="font-size: 2pt; font-family: Palatino; color: #002060;">&nbsp;&nbsp;</span></strong></p></div>';
+html += '<table style="table-layout: fixed; width: 100%; border-collapse: collapse;" border="1"><tr style="text-align: center;background-color: #B4C6E7;font-size: 10pt; font-family: Arial Arrow; word-wrap: break-word;"><td><strong>Number</strong></td><td><strong>Caller</strong></td><td><strong>Category</strong></td><td><strong>Sub Category</strong></td><td><strong>Priority</strong></td><td><strong>Short Description</strong></td><td><strong>Description</strong></td><td><strong>Assignment Group</strong></td></tr>' + getIncidentsTable(json.incidents) + '</table>';
+hfInfo["FooterTextAlignment"] = "BOTTOM_CENTER";
+hfInfo["FooterText"] = "Incidents List";
+hfInfo["PageOrientation"] = "LANDSCAPE";
+hfInfo["GeneratePageNumber"] = "true";
+
+result = v.convertToPDFWithHeaderFooter(html, 'change_request', current.sys_id, "Incidents Related to the Change:_" + current.number, hfInfo);
+action.setRedirectURL(current);
+
+function getIncidentsTable(incidents) {
+    if (incidents == '')
+        return '';
+    var table = '',
+        i;
+    incidents = incidents.split(',');
+    for (i = 0; i < incidents.length; i += 8)
+        table += '<tr style="text-align: center;font-size: 10pt; font-family: Arial Arrow; word-wrap: break-word;"><td>' + incidents[i] + '</td><td>' + incidents[i + 1] + '</td><td>' + incidents[i +2] + '</td><td>' + incidents[i + 3] + '</td><td>' + incidents[i + 4] + '</td><td>' + incidents[i + 5] + '</td><td>' + incidents[i + 6] + '</td><td>' + incidents[i + 7] + '</td></tr>';
+    return table;
+}