wip-feat: reduces env vars, adds getting-started page

src/User/Action/Command/RegisterUserCommand.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\User\Action\Command;
+
+use OneToMany\RichBundle\Contract\CommandInterface;
+
+/** @implements CommandInterface<RegisterUserCommand> */
+class RegisterUserCommand implements CommandInterface
+{
+    public function __construct(
+        public string $name,
+        public string $email,
+        public string $username,
+        public string $password,
+    ) {}
+}