feat: Add miscellaaneous endpoint

Classes/Endpoint/Miscellaneous.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Avency\Gitea\Endpoint;
+
+use Avency\Gitea\Client;
+
+/**
+ * Miscellaneous endpoint
+ */
+class Miscellaneous implements EndpointInterface
+{
+    const BASE_URI = 'api/v1';
+
+    /**
+     * @var Client
+     */
+    protected $client;
+
+    /**
+     * @param Client $client
+     */
+    public function __construct(Client $client)
+    {
+        $this->client = $client;
+    }
+
+    /**
+     * @return string
+     */
+    public function version(): string
+    {
+        $response = $this->client->request(self::BASE_URI . '/version');
+        return \GuzzleHttp\json_decode($response->getBody(), true)['version'];
+    }
+}