message: [install] Naming scheme and const
diff: @@ -59,7 +59,7 @@ namespace vcpkg::Commands::Install
  auto files = fs.get_files_recursive(source_dir);
  for (auto&& file : files)
  {
  - auto status = fs.status(file, ec);
  + const auto status = fs.status(file, ec);
  if (ec)
  {
  System::println(System::Color::error, "failed: %s: %s", file.u8string(), ec.message());
  @@ -309,7 +309,7 @@ namespace vcpkg::Commands::Install
  const BinaryControlFile bcf =
  Paragraphs::try_load_cached_control_package(paths, action.spec).value_or_exit(VCPKG_LINE_INFO);
  System::println("Installing package %s... ", display_name_with_features);
  - auto install_result = install_package(paths, bcf, &status_db);
  + const auto install_result = install_package(paths, bcf, &status_db);
  switch (install_result)
  {
  case InstallResult::SUCCESS:
  @@ -328,7 +328,7 @@ namespace vcpkg::Commands::Install
  System::Color::warning, "Package %s is already built -- not building from HEAD", display_name);
  }
  System::println("Installing package %s... ", display_name);
  - auto install_result = install_package(
  + const auto install_result = install_package(
  paths, action.any_paragraph.binary_control_file.value_or_exit(VCPKG_LINE_INFO), &status_db);
  switch (install_result)
  {
  @@ -470,7 +470,7 @@ namespace vcpkg::Commands::Install
  const std::unordered_set<std::string> options = args.check_and_get_optional_command_arguments(
  {OPTION_DRY_RUN, OPTION_USE_HEAD_VERSION, OPTION_NO_DOWNLOADS, OPTION_RECURSE});
  - const bool dryRun = options.find(OPTION_DRY_RUN) != options.cend();
  + const bool dry_run = options.find(OPTION_DRY_RUN) != options.cend();
  const bool use_head_version = options.find(OPTION_USE_HEAD_VERSION) != options.cend();
  const bool no_downloads = options.find(OPTION_NO_DOWNLOADS) != options.cend();
  const bool is_recursive = options.find(OPTION_RECURSE) != options.cend();
  @@ -519,14 +519,14 @@ namespace vcpkg::Commands::Install
  print_plan(action_plan, is_recursive);
  - if (dryRun)
  + if (dry_run)
  {
  Checks::exit_success(VCPKG_LINE_INFO);
  }
  for (const auto& action : action_plan)
  {
  - if (auto install_action = action.install_plan.get())
  + if (const auto install_action = action.install_plan.get())
  {
  const BuildResult result =
  perform_install_plan_action(paths, *install_action, install_plan_options, status_db);
  @@ -536,7 +536,7 @@ namespace vcpkg::Commands::Install
  Checks::exit_fail(VCPKG_LINE_INFO);
  }
  }
  - else if (auto remove_action = action.remove_plan.get())
  + else if (const auto remove_action = action.remove_plan.get())
  {
  Checks::check_exit(VCPKG_LINE_INFO, GlobalState::feature_packages);
  Remove::perform_remove_plan_action(paths, *remove_action, Remove::Purge::YES, status_db);
  