Add base support for creating a new API key for an account

app/Transformers/Api/Client/ApiKeyTransformer.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Pterodactyl\Transformers\Api\Client;
+
+use Pterodactyl\Models\ApiKey;
+
+class ApiKeyTransformer extends BaseClientTransformer
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getResourceName(): string
+    {
+        return ApiKey::RESOURCE_NAME;
+    }
+
+    /**
+     * Transform this model into a representation that can be consumed by a client.
+     *
+     * @param \Pterodactyl\Models\ApiKey $model
+     * @return array
+     */
+    public function transform(ApiKey $model)
+    {
+        return [
+            'identifier' => $model->identifier,
+            'description' => $model->memo,
+            'allowed_ips' => $model->allowed_ips,
+            'last_used_at' => $model->last_used_at ? $model->last_used_at->toIso8601String() : null,
+            'created_at' => $model->created_at->toIso8601String(),
+        ];
+    }
+}