feat: 允许加载其他人的配置

[Serendisand]

新增一个工具类，专门用于保存当前配置或加载其他配置，允许预设配置和多个配置自由切换，在gui点击config后跳转至二级页面进行配置
定位当前配置 .minecraft/FPSMaster Edge/default.json

[gaoyu06]

Thanks for the report — I’ve noted it and will review it further. If you can share reproduction steps, environment details, logs, or screenshots, that will help us verify and prioritize it.

[Serendisand]

completed #146