web client - allow client-side CSS. People like to customize, let them upload or supply their own CSS?

In the Item class (found in the Item folder of the GameLogic project)

1. Add a new enum value to ItemTypes called Money
2. Add a property of type int called Value to Item.cs this is to store the value of the money.

With a money item in the room, assuming it's called Gold coin

1. The user will see "(500) gold coins stacked here."
   • 500 comes from the value property of th

Problems like #235 keep popping up and while the new version does fix the reason those values become None, even if they did become None again in the future, that should not cause a panic.
A simple message to the user that the version check failed should be sufficient - the rest of Blightmud can continue without issue.

I suggest going over every unwrap and expect in the code and thinkin

为了支持在Lua下对客户端的扩展操作，需要 gomud 提供以下功能的函数：

1. 获取 gomud 所在安装目录的绝对路径 - 便于在 Lua 中读写 gomud 目录下的文件
2. 获取 gomud 所在终端的尺寸（宽高值）- 便于 Lua 输出格式化根据显示窗口大小动态调整
3. 支持文字和背景颜色设置的 Print()