fix bigobj under MSVC, fix yaml-cpp link.

[reitowo]

• MSVC needs /bigobj to compile
• The original cmake file failed to link yaml-cpp, as the find_package doesn't set YAML_CPP_INCLUDE_DIRS and YAML_CPP_LIBRARIES (under vcpkg, at least), which failed to link. This patch link yaml-cpp directly.

[matlabbe]

Thanks!

[matlabbe]

I checked the old msvc build, and /bigobj seems not used and worked. I remember though on some computer config it is required. Having the flag doesn't seem to cause build issue, I'll keep it.

For yaml-cpp, maybe it is because on how vcpkg builds its own version of yaml-cpp (without old cmake include/library variables). The windows build seems now including two times the yaml-cpp library:

"C:\Program Files\yaml-cpp\lib\libyaml-cppmd.lib" "C:\Program Files\yaml-cpp\lib\libyaml-cppmd.lib"

This doesn't affect the build either, so lets keep it for vcpkg.