Added the payload models

lib/models/PayloadUser.php

@@ -0,0 +1,51 @@
+<?php
+declare(strict_types=1);
+namespace yii\gitea\models;
+
+use yii\base\{Model};
+
+/**
+ * Represents the author or committer of a commit.
+ */
+class PayloadUser extends Model {
+
+  /**
+   * @var string The mail address.
+   */
+  public $email = '';
+
+  /**
+   * @var string The full name.
+   */
+  public $name = '';
+
+  /**
+   * @var string The name of the Gitea account.
+   */
+  public $username = '';
+
+  /**
+   * Creates a new user from the specified JSON map.
+   * @param object $map A JSON map representing a user.
+   * @return static The instance corresponding to the specified JSON map.
+   */
+  static function fromJson(object $map): self {
+    return new static([
+      'email' => isset($map->email) && is_string($map->email) ? mb_strtolower($map->email) : '',
+      'name' => isset($map->name) && is_string($map->name) ? $map->name : '',
+      'username' => isset($map->username) && is_string($map->username) ? $map->username : ''
+    ]);
+  }
+
+  /**
+   * Returns the validation rules for attributes.
+   * @return array[] The validation rules.
+   */
+  function rules(): array {
+    return [
+      [['email', 'name', 'username'], 'trim'],
+      ['email', 'filter', 'filter' => 'mb_strtolower'],
+      ['email', 'email']
+    ];
+  }
+}