message: `export`: --zip/--7zip/--raw now provides next-step instructions
diff: @@ -325,10 +325,23 @@ namespace vcpkg::Commands::Export
  Checks::check_exit(VCPKG_LINE_INFO, !ec);
  }
  + auto print_next_step_info = [](const fs::path& prefix) {
  + const fs::path cmake_toolchain = prefix / "scripts" / "buildsystems" / "vcpkg.cmake";
  + const CMakeVariable cmake_variable =
  + CMakeVariable(L"CMAKE_TOOLCHAIN_FILE", cmake_toolchain.generic_string());
  + System::println("\n"
  + "To use the exported libraries in CMake projects use:"
  + "\n"
  + " %s"
  + "\n",
  + Strings::utf16_to_utf8(cmake_variable.s));
  + };
  +
  if (raw)
  {
  System::println(
  System::Color::success, R"(Files exported at: "%s")", raw_exported_dir_path.generic_string());
  + print_next_step_info(export_to_path);
  }
  if (nuget)
  @@ -343,7 +356,8 @@ namespace vcpkg::Commands::Export
  System::println(R"(
  With a project open, go to Tools->NuGet Package Manager->Package Manager Console and paste:
  Install-Package %s -Source "%s"
  -)",
  +)"
  + "\n",
  nuget_id,
  output_path.parent_path().u8string());
  }
  @@ -355,6 +369,7 @@ With a project open, go to Tools->NuGet Package Manager->Package Manager Console
  do_archive_export(paths, raw_exported_dir_path, export_to_path, ArchiveFormatC::ZIP);
  System::println(System::Color::success, "Creating zip archive... done");
  System::println(System::Color::success, "Zip archive exported at: %s", output_path.generic_string());
  + print_next_step_info("[...]");
  }
  if (_7zip)
  @@ -364,6 +379,7 @@ With a project open, go to Tools->NuGet Package Manager->Package Manager Console
  do_archive_export(paths, raw_exported_dir_path, export_to_path, ArchiveFormatC::_7ZIP);
  System::println(System::Color::success, "Creating 7zip archive... done");
  System::println(System::Color::success, "7zip archive exported at: %s", output_path.generic_string());
  + print_next_step_info("[...]");
  }
  if (!raw)
  