Add placeholder pages for Domains and Accounts; mark current page in navbar

src/Frontend/Accounts/AccountController.php

@@ -0,0 +1,19 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Frontend\Accounts;
+
+use MailAccountAdmin\Frontend\BaseController;
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+
+class AccountController extends BaseController
+{
+    public function showAccounts(Request $request, Response $response): Response
+    {
+        $renderData = [
+        ];
+
+        return $this->view->render($response, 'accounts.html.twig', $renderData);
+    }
+}