Fix up subuser API response for clients

app/Transformers/Api/Client/UserTransformer.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Pterodactyl\Transformers\Api\Client;
+
+use Illuminate\Support\Str;
+use Pterodactyl\Models\User;
+
+class UserTransformer extends BaseClientTransformer
+{
+    /**
+     * Return the resource name for the JSONAPI output.
+     *
+     * @return string
+     */
+    public function getResourceName(): string
+    {
+        return User::RESOURCE_NAME;
+    }
+
+    /**
+     * Transforms a User model into a representation that can be shown to regular
+     * users of the API.
+     *
+     * @param \Pterodactyl\Models\User $model
+     * @return array
+     */
+    public function transform(User $model)
+    {
+        return [
+            'uuid' => $model->uuid,
+            'username' => $model->username,
+            'email' => $model->email,
+            'image' => 'https://gravatar.com/avatar/' . md5(Str::lower($model->email)),
+            '2fa_enabled' => $model->use_totp,
+            'created_at' => $model->created_at->toIso8601String(),
+        ];
+    }
+}