message: add VS 2022 generators
diff: @@ -851,7 +851,8 @@ const VsGenerators: {[key: string]: string} = {
  VS140COMNTOOLS: 'Visual Studio 14 2015',
  14: 'Visual Studio 14 2015',
  15: 'Visual Studio 15 2017',
  - 16: 'Visual Studio 16 2019'
  + 16: 'Visual Studio 16 2019',
  + 17: 'Visual Studio 17 2022'
  };
  async function varsForVSInstallation(inst: VSInstallation, hostArch: string, targetArch?: string): Promise<Map<string, string>|null> {
  