message: Add to vcpkg.cmake
diff: @@ -401,6 +401,7 @@ namespace vcpkg::Build
  {"CURRENT_PORT_DIR", config.port_dir},
  {"TARGET_TRIPLET", triplet.canonical_name()},
  {"TARGET_TRIPLET_FILE", paths.get_triplet_file_path(triplet).u8string()},
  + {"CMAKE_PORT_SETTINGS", config.port_dir / "port_settings.cmake"},
  {"VCPKG_PLATFORM_TOOLSET", toolset.version.c_str()},
  {"VCPKG_USE_HEAD_VERSION", Util::Enum::to_bool(config.build_package_options.use_head_version) ? "1" : "0"},
  {"DOWNLOADS", paths.downloads},
  