db_hosts: add ability to link more than one node

app/Models/DatabaseHostNode.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Pterodactyl\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * @property int $node_id
+ * @property int $database_host_id
+ */
+class DatabaseHostNode extends Model
+{
+    /**
+     * @var string
+     */
+    protected $table = 'database_host_node';
+
+    /**
+     * @var null
+     */
+    protected $primaryKey = null;
+
+    /**
+     * @var bool
+     */
+    public $incrementing = false;
+}