add farsi language

CHANGELOG_CN.md

@@ -4,6 +4,9 @@ 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]
+- 添加 `farsi` 语言
+
+## [4.5.7] - 2022-9-28
 - 新增 `Artplayer.VOLUME_STEP` 用于控制调整 `音量` 的步长，默认为 `0.1`
 - 新增 `Artplayer.SEEK_STEP` 用于控制调整 `快进/快退` 的步长，默认为 `5` 秒
 - 修复部分 `svg` 图标在移动端不显示的问题