iup的lua绑定

### What is the Addon for?

From Microsoft translator：
I am currently learning the IUP GUI library, mainly using the Lua language. If you use Lua to call the IUP library, you can identify the relevant interfaces, but the parameter information is missing. Therefore, I plan to document the interfaces and properties commonly used in IUP in addition to studying.

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原文：

目前在学习iup gui库，主要使用的是lua语言。使用lua调用iup库，虽然能够识别出相关接口，但是参数的信息却是缺失的。因此我打算在学习之余记录iup中常用的接口和属性。


### Additional Notes

iup 官网：https://iup.sourceforge.net/

No repository file, test, or entry point is identified in the issue. Start by reading the IUP documentation at https://iup.sourceforge.net/ and inspecting the LLS-Addons repository for the relevant addon structure. Done means documenting the commonly used IUP Lua interfaces and properties with their parameter information.

Written by the indexing model from the issue text.