message: [vcpkg] Allow compilation via CMake with MSVC
diff: cmake_minimum_required(VERSION 3.3)
  project(vcpkg CXX)
  -add_compile_options(-std=c++1z)
  -
  if(CMAKE_COMPILER_IS_GNUXX OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
  set(GCC 1)
  elseif(CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
  set(CLANG 1)
  +elseif(MSVC)
  + add_compile_options(/std:c++latest)
  else()
  message(FATAL_ERROR "Unknown compiler: ${CMAKE_CXX_COMPILER_ID}")
  endif()
  +if(GCC OR CLANG)
  + add_compile_options(-std=c++1z)
  +endif()
  +
  file(GLOB_RECURSE VCPKGLIB_SOURCES src/vcpkg/*.cpp)
  add_executable(vcpkg src/vcpkg.cpp ${VCPKGLIB_SOURCES})
  