Add ability to switch between new and existing daemon

app/Repositories/Wings/PowerRepository.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * This software is licensed under the terms of the MIT license.
+ * https://opensource.org/licenses/MIT
+ */
+
+namespace Pterodactyl\Repositories\Wings;
+
+use Webmozart\Assert\Assert;
+use Pterodactyl\Contracts\Repository\Daemon\PowerRepositoryInterface;
+use Pterodactyl\Exceptions\Repository\Daemon\InvalidPowerSignalException;
+
+class PowerRepository extends BaseRepository implements PowerRepositoryInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function sendSignal($signal)
+    {
+        Assert::stringNotEmpty($signal, 'The first argument passed to sendSignal must be a non-empty string, received %s.');
+
+        switch ($signal) {
+            case self::SIGNAL_START:
+            case self::SIGNAL_STOP:
+            case self::SIGNAL_RESTART:
+            case self::SIGNAL_KILL:
+                return $this->getHttpClient()->request('PUT', '/server/' . $this->getAccessServer() . '/power', [
+                    'json' => [
+                        'action' => $signal,
+                    ],
+                ]);
+                break;
+            default:
+                throw new InvalidPowerSignalException('The signal ' . $signal . ' is not defined and could not be processed.');
+        }
+    }
+}