BREAKING CHANGE(core): Implement custom XmlBuilder, remove xmlbuilder2, upgrade fast-xml-parser, update SmartXml API, tests and CI

ts/index.ts

@@ -1,9 +1,10 @@
 import * as plugins from './smartxml.plugins.js';
+import { XmlBuilder } from './smartxml.xmlbuilder.js';
 
 export class SmartXml {
   constructor() {}
 
-  public create = plugins.xmlbuilder2.create;
+  public create = XmlBuilder.create;
 
   public parseXmlToObject<T = any>(xmlStringArg: string): T {
     const parser = new plugins.fastXmlParser.XMLParser({
@@ -22,9 +23,11 @@ export class SmartXml {
       ignoreAttributes: false,
       attributeNamePrefix: '@_',
       format: true,
-      indentBy: '  '
+      indentBy: '  ',
     });
     const xml = builder.build(jsObject);
     return '<?xml version="1.0" encoding="UTF-8"?>\n' + xml;
   }
-}
+}
+
+export { XmlBuilder };