添加一个提示窗口显示mod下载进度，避免玩家误操作

[jonathanqwq]

Is your feature request related to a problem? Please describe. 在下载mod时无弹窗，玩家无法确认当前mod安装状态

Describe the solution you'd like A clear and concise description of what you want to happen. 添加一个弹窗如同zbx佬的资源包下载mod

Additional Information Add any other context or screenshots about the feature request here. 没了