Add XG1 order type and example

XG1 order type is used for ISO XML 20022 CGI (Common Global Implementation) which should be a unified format that works within a country (irrespective of bank).

Signed-off-by: Herman van Hazendonk <github.com@herrie.org>

examples/send-xg1-order.js

@@ -0,0 +1,27 @@
+#! /usr/bin/env node
+
+'use strict';
+
+const ebics = require('../index');
+const fs = require('fs');
+
+const client = new ebics.Client({
+	url: 'https://ebics.server',
+	partnerId: '',
+	userId: '',
+	hostId: '',
+	passphrase: 'test', // keys-test will be decrypted with this passphrase
+	keyStorage: ebics.fsKeysStorage('./keys-test'),
+});
+
+// The bank keys must have been already saved
+const paymentFile = fs.readFileSync('mytestfile.xml').toString();
+
+client.send(ebics.Orders.XG1(paymentFile))
+	.then((resp) => {
+		console.log('Response for XG1 order %j', resp);
+	})
+	.catch((err) => {
+		console.error(err);
+		process.exit(1);
+	});