thirdparty deps for open3d

[youngday]

in ubuntu20.04,open3d v0.17.0 is installed, add_requires("cmake::Open3D ",{alias = "open3d", system = true}),

when i compile examples,find it ,utility and visualization 3rd lib not found ,
errors: Visualizer.cpp:17: undefined reference to `open3d::PrintOpen3DVersion()',
how to add thirdparty of open3d for xmake.lua ?
Thanks!

[waruqi]

add_requires("open3d")