Add basic database listing for server

app/Http/Requests/Api/Client/Servers/GetDatabasesRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Pterodactyl\Http\Requests\Api\Client\Servers;
+
+use Pterodactyl\Models\Server;
+use Pterodactyl\Http\Requests\Api\Client\ClientApiRequest;
+
+class GetDatabasesRequest extends ClientApiRequest
+{
+    /**
+     * Determine if this user has permission to view all of the databases available
+     * to this server.
+     *
+     * @return bool
+     */
+    public function authorize(): bool
+    {
+        return $this->user()->can('view-databases', $this->getModel(Server::class));
+    }
+}