feat: add danmuku plugin documentation and i18n setup guide

- Created a new documentation file for the danmuku plugin with code examples.
- Added comprehensive language settings documentation, including default languages, importing languages, adding new languages, and modifying existing languages.
- Updated the i18n setup guide with code snippets for better clarity and usability.

chore: Update change log, add removal of `svg` default `fill` color v…

…alue and direct import optimization of `Option`

chore: 更新版本至 5.1.5，修复多个问题并增强移动端支持

chore: 更新 CHANGELOG，新增 artplayer-plugin-dash-control 插件并修复相关问题

feat: 添加动态代理支持

新增 `option.proxy` 选项，用于代理第三方的 `video` 和 `canvas`。新增 `artplayer-proxy-webav` 代理，来自 [bilibili/WebAV](https://github.com/bilibili/WebAV)。新增 `artplayer-proxy-libmedia` 代理，来自 [zhaohappy/libmedia](https://github.com/zhaohappy/libmedia)。

feat: Update Artplayer initialization in documentation

chore: Update ArtPlayer version to 5.1.5

chore: Update ArtPlayer version to 5.1.4

chore: Remove screen.orientation.lock functionality due to compatibil…

…ity issues

Update release date for version 5.1.1