Enabled Payout API Support

- Includes Unit and Functional Tests
- Includes Samples

sample/payouts/GetPayoutItemStatus.php

@@ -0,0 +1,26 @@
+<?php
+
+// # Get Payout Item Status Sample
+//
+// Use this call to get data about a payout item, including the status, without retrieving an entire batch. You can get the status of an individual payout item in a batch in order to review the current status of a previously-unclaimed, or pending, payout item.
+// https://developer.paypal.com/docs/api/#get-the-status-of-a-payout-item
+// API used: GET /v1/payments/payouts-item/<Payout-Item-Id>
+
+/** @var \PayPal\Api\PayoutBatch $payoutBatch */
+$payoutBatch = require 'GetPayoutBatchStatus.php';
+// ## Payout Item ID
+// You can replace this with your Payout Batch Id on already created Payout.
+$payoutItem = $payoutBatch->getItems()[0];
+$payoutItemId = $payoutItem->getPayoutItemId();
+
+// ### Get Payout Item Status
+try {
+    $output = \PayPal\Api\PayoutItem::get($payoutItemId, $apiContext);
+} catch (Exception $ex) {
+    ResultPrinter::printError("Get Payout Item Status", "PayoutItem", null, $payoutItemId, $ex);
+    exit(1);
+}
+
+ResultPrinter::printResult("Get Payout Item Status", "PayoutItem", $output->getPayoutItemId(), null, $output);
+
+return $output;