Good examples of vcpkg-cmake-wrapper.cmake

[huangqinjin]

vcpkg-cmake-wrapper.cmake is tricky to write. Need some examples for better understanding.

@dg0yt @Neumann-A

[dg0yt]

Start here: https://github.com/dg0yt/vcpkg/blob/1c66f2693096cc539042d01d8b2b4e0f07f4ae19/docs/maintainers/wrapper-guidelines.md
(From #19692)

[huangqinjin]

Kindly point out some concrete examples.

[dg0yt]

I mentioned tiff and libarchive in another post. Non-trivial, and maybe not perfect.

[huangqinjin]

Unfortunately, the wrapper of libarchive doesn't solve the most fundamental multi-config issue. It called to CMake's builtin find module which doesn't take care of mulit-config.