Added new models

lib/models/StatusState.php

@@ -0,0 +1,37 @@
+<?php
+declare(strict_types=1);
+namespace Gitea\Models;
+
+use Enum\{EnumTrait};
+
+/**
+ * Defines the state of a Gitea status.
+ */
+final class StatusState {
+  use EnumTrait;
+
+  /**
+   * @var string The status is an error.
+   */
+  const ERROR = 'error';
+
+  /**
+   * @var string The status is a failure.
+   */
+  const FAILURE = 'failure';
+
+  /**
+   * @var string The status is a pending.
+   */
+  const PENDING = 'pending';
+
+  /**
+   * @var string The status is a success.
+   */
+  const SUCCESS = 'success';
+
+  /**
+   * @var string The status is a warning.
+   */
+  const WARNING = 'warning';
+}