Add database list endpoint, add more resource name magic

app/Http/Controllers/Api/Application/Servers/DatabaseController.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Pterodactyl\Http\Controllers\Api\Application\Servers;
+
+use Pterodactyl\Models\Server;
+use Pterodactyl\Contracts\Repository\DatabaseRepositoryInterface;
+use Pterodactyl\Transformers\Api\Application\ServerDatabaseTransformer;
+use Pterodactyl\Http\Controllers\Api\Application\ApplicationApiController;
+
+class DatabaseController extends ApplicationApiController
+{
+    /**
+     * @var \Pterodactyl\Contracts\Repository\DatabaseRepositoryInterface
+     */
+    private $repository;
+
+    /**
+     * DatabaseController constructor.
+     *
+     * @param \Pterodactyl\Contracts\Repository\DatabaseRepositoryInterface $repository
+     */
+    public function __construct(DatabaseRepositoryInterface $repository)
+    {
+        parent::__construct();
+
+        $this->repository = $repository;
+    }
+
+    /**
+     * Return a listing of all databases currently available to a single
+     * server.
+     *
+     * @param \Pterodactyl\Models\Server $server
+     * @return array
+     */
+    public function index(Server $server): array
+    {
+        $databases = $this->repository->getDatabasesForServer($server->id);
+
+        return $this->fractal->collection($databases)
+            ->transformWith($this->getTransformer(ServerDatabaseTransformer::class))
+            ->toArray();
+    }
+}