Add support for Bank GPB AO (Gazprombank Russia)

Add custom order types (G02, G52, G53, G1R and G1V) and examples for Bank GPB AO (Gazprombank Russia).

Pain.001.001.06 (RUB) - G1R
Pain.001.001.06 (FCY/FX/RLS) - G1V
Pain.002.001.06 - G02
Camt.052.001.05 - G52
Camt.053.001.05 - G53

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

examples/send-g1v-order.js

@@ -0,0 +1,20 @@
+#! /usr/bin/env node
+
+'use strict';
+
+const fs = require('fs');
+
+const client = require('./getClient')();
+const { Orders } = require('../index');
+
+// The bank keys must have been already saved
+const paymentFile = fs.readFileSync('FCY_PAYMENT.xml').toString();
+
+client.send(Orders.G1V(paymentFile))
+	.then((resp) => {
+		console.log('Response for G1V order %j', resp);
+	})
+	.catch((err) => {
+		console.error(err);
+		process.exit(1);
+	});