[Feature] 支持精简弹幕功能

[EdWard0x]

哔哩哔哩上面的《精简弹幕》被设定为1/4屏，半屏，3/4屏，全屏，麻烦大大有空可以支持一下

[keepraw]

弹幕功能是 blrec 带的，bilive 无法处理这个，除非 blrec 更新或者自己修改源码

[timerring]

弹幕功能是 blrec 带的，bilive 无法处理这个，除非 blrec 更新或者自己修改源码

弹幕内容是 blrec 获取的信息流，但是具体的弹幕渲染方式是我在 DanmakuConvert 写的，这个功能其实不是很复杂，只不过最近有点事比较忙，我会在有时间时 update 这个 feature 的。

[lululutx]

哔哩哔哩上面的《精简弹幕》被设定为1/4屏，半屏，3/4屏，全屏，麻烦大大有空可以支持一下

你可以在这个地方简单处理 判断一下
\src\danmaku\DanmakuConvert\dmconvert\normal\normal_handler.py

[github-actions]

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