Add document for luarocks-build-xmake and lua.native-objects (#194)

Refer:

- xmake-io/xmake#5953
- xmake-io/xmake#5948

guide/project_examples.md

@@ -1811,6 +1811,13 @@ target("hello")
     add_files("src/main.c")
 ```
 
+## Lua module
+
+Refer <https://github.com/xmake-io/luarocks-build-xmake>
+
+If your lua module contains C code, you can use [LuaNativeObjects](https://github.com/Neopallium/LuaNativeObjects) to generate C code from lua code.
+Refer [example](https://github.com/Freed-Wu/rime.nvim/blob/main/xmake.lua).
+
 ## Linux kernel driver module
 
 In version v2.6.2, xmake fully supports the construction of Linux kernel driver modules. This may be the first and only third-party build tool that supports compiling Linux kernel drivers.

zh-cn/guide/project_examples.md

@@ -1811,6 +1811,14 @@ target("hello")
     add_files("src/main.c")
 ```
 
+## Lua 模块
+
+参考 <https://github.com/xmake-io/luarocks-build-xmake>
+如果你的 lua 模块含有 C 代码，你可以使用 [LuaNativeObjects](https://github.com/Neopallium/LuaNativeObjects) 去从 lua 代码生成 C 代码。
+参考[例子](https://github.com/Freed-Wu/rime.nvim/blob/main/xmake.lua)。
+
+## Lua
+
 ## Linux 内核驱动模块
 
 v2.6.2 版本，xmake 完整支持了 Linux 内核驱动模块的构建，这也许首个也是唯一一个支持编译 Linux 内核驱动的第三方构建工具了。