add Artplayer.CONTEXTMENU

CHANGELOG_CN.md

@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+-   新增 `Artplayer.CONTEXTMENU` 用于设置是否显示右键菜单，默认为 `true`
 
 ## [4.5.10] - 2022-11-5