feat(auth): implement authentication endpoints with registration and login functionality

app/OpenApi.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Info(
+    version: '1.0.0',
+    title: 'Hoshpoint API',
+    description: 'API documentation for Hoshpoint backend',
+)]
+#[OA\Server(url: '/api', description: 'API server')]
+#[OA\Tag(name: 'Auth', description: 'Authentication endpoints')]
+class OpenApi {}