Add incidenthelper snippet

Server-Side Components/Script Includes/Get Open Incidents/README.md

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+# IncidentHelper - getOpenIncidents
+
+**Purpose:** Script Include (client-callable via GlideAjax) that returns a JSON array of active incident records.
+
+**Usage Example**
+```js
+var ga = new GlideAjax('IncidentHelper');
+ga.addParam('sysparm_name','getOpenIncidents');
+ga.getXMLAnswer(function(response){
+  var list = JSON.parse(response || '[]');
+  console.log(list);
+});

Server-Side Components/Script Includes/Get Open Incidents/snippet_file.js

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+
+// IncidentHelper - Script Include
+var IncidentHelper = Class.create();
+IncidentHelper.prototype = Object.extendsObject(AbstractAjaxProcessor, {
+getOpenIncidents: function() {
+ var gr = new GlideRecord('incident');
+ gr.addQuery('active', true);
+ gr.orderByDesc('sys_created_on');
+ gr.setLimit(50);
+ gr.query();
+
+ var list = [];
+ while (gr.next()) {
+   list.push({
+     number: gr.getValue('number'),
+     short_description: gr.getValue('short_description'),
+     sys_id: gr.getValue('sys_id'),
+     priority: gr.getValue('priority')
+   });
+ }
+ return JSON.stringify(list);
+},
+type: 'IncidentHelper'
+});