Mark payloads as internal and final

Author: glaubinix

Diff for: src/Payload/ArtifactPackageConfig.php

@@ -2,6 +2,10 @@
 
 namespace PrivatePackagist\ApiClient\Payload;
 
+/**
+ * @internal
+ * @final
+ */
 class ArtifactPackageConfig
 {
     /** @var int[] */

Diff for: src/Payload/CustomPackageConfig.php

@@ -2,6 +2,10 @@
 
 namespace PrivatePackagist\ApiClient\Payload;
 
+/**
+ * @internal
+ * @final
+ */
 class CustomPackageConfig
 {
     /** @var string */

Diff for: src/Payload/VcsPackageConfig.php

@@ -2,6 +2,10 @@
 
 namespace PrivatePackagist\ApiClient\Payload;
 
+/**
+ * @internal
+ * @final
+ */
 class VcsPackageConfig
 {
     /** @var string */