wish support for xmake build.

**Is your feature request related to a problem? (你需要的功能是否与某个问题有关?)**
no

**Describe the solution you'd like (描述你期望的解决方法)**
xmake is a chinese build system, which I think is really convinient.

**Describe alternatives you've considered (描述你想到的折衷方案)**

**Additional context/screenshots (更多上下文/截图)**

No files, tests, or entry points are identified in the issue. Start by examining the C++ repository's existing build configuration and determine what xmake support would need to cover. Done would require an agreed integration scope and validation that the project builds successfully with xmake.

Written by the indexing model from the issue text.