PotionEnchant

这是一个测试版，修复一些BUG：

1.万能药水附魔瓶在奇怪的时候无法用于降低等级。

2.通过万能药水附魔瓶给予护甲的负面效果/武器的正面效果，无法应用。

3.星空cosmic纹理有些时候会丢失，因为没有注册。

添加了许多新东西，我暂时先不介绍，如果有BUG请你们跟我反馈，谢谢！

This is a beta version with some bugs fixed:

The Enchanted Potion of Universal Remedy cannot be used to downgrade levels in strange circumstances.

1. The negative effects of armor or positive effects of weapons granted by the Potion of the Universal Elixir cannot be applied.

2. The cosmic texture of the starry sky sometimes disappears due to lack of registration.

Many new features have been added, which I won't introduce for now. If you encounter any bugs, please report them to me. Thank you!