message: [autocomplete] Add autocompletion for `vcpkg upgrade`
diff: @@ -56,6 +56,7 @@ namespace vcpkg::Commands::Autocomplete
  "cache",
  "version",
  "contact",
  + "upgrade"
  };
  Util::unstable_keep_if(public_commands, [&](const std::string& s) {
  @@ -124,6 +125,7 @@ namespace vcpkg::Commands::Autocomplete
  CommandEntry{"edit", R"###(^edit\s(.*\s|)(\S*)$)###", Edit::COMMAND_STRUCTURE},
  CommandEntry{"remove", R"###(^remove\s(.*\s|)(\S*)$)###", Remove::COMMAND_STRUCTURE},
  CommandEntry{"integrate", R"###(^integrate(\s+)(\S*)$)###", Integrate::COMMAND_STRUCTURE},
  + CommandEntry{"upgrade", R"###(^upgrade(\s+)(\S*)$)###", Upgrade::COMMAND_STRUCTURE},
  };
  for (auto&& command : COMMANDS)
  