message: Assign Robot ID values in `generateRobotToIdMap`
  The mapping is arbitrary, so long as each `Robot` is assigned a unique
  ID. There is really no need to use a long term stored value for the ID.
  The mappings only need to exist during save/load.
diff: @@ -60,9 +60,10 @@ static void readRccRobots(std::string robotIds, const std::map<int, Robot*>& idT
  static std::map<const Robot*, int> generateRobotToIdMap(std::vector<Robot*> robots)
  {
  std::map<const Robot*, int> robotToIdMap{};
  + int currentId = 0;
  for (const auto* robot : robots)
  {
  - robotToIdMap[robot] = robot->id();
  + robotToIdMap[robot] = currentId++;
  }
  return robotToIdMap;
  }
  