Check if the loaded model type is what is expected (#379)

bool UsgsAstroPlugin::canModelBeConstructedFromState(

    const std::string &modelName, const std::string &modelState,

    csm::WarningList *warnings) const {

  std::string err_msg;

  try {

    csm::Model *model = constructModelFromState(modelState, warnings);

    // Use a shared_ptr to not have to manually deallocate the pointer

    std::shared_ptr<csm::Model> model(constructModelFromState(modelState, warnings));

    if (model) {

      delete model;

      // The created model name

      std::string createdModelName = model->getModelName();

      // If the model is of expected type, all is good

      if (createdModelName == modelName)

        return true;

      // Need to stay on to deal with the fact that the model is not of expected type.

      err_msg = "Created a model of type " + createdModelName + " instead of the expected "

        + modelName;

    }

  } catch (std::exception &e) {

    std::string msg = "Could not create model [";

    msg += modelName;

    msg += "] with error [";

    msg += e.what();

    msg += "]";

    MESSAGE_LOG(msg);

    if (warnings) {

      warnings->push_back(csm::Warning(

          csm::Warning::UNKNOWN_WARNING, msg,

          "UsgsAstroFrameSensorModel::canModelBeConstructedFromState()"));

    }

    return false;

    err_msg = e.what();

  } catch (...) {

    std::string msg = "Could not create model [";

    msg += modelName;

    msg += "] with an unknown error.";

    MESSAGE_LOG(msg);

    err_msg = "Unknown error";

  }

  std::string fullMsg = "Could not create model [";

  fullMsg += modelName;

  fullMsg += "] with error [";

  fullMsg += err_msg;

  fullMsg += "]";

  MESSAGE_LOG(fullMsg);

  if (warnings) {

      warnings->push_back(csm::Warning(

          csm::Warning::UNKNOWN_WARNING, msg,

    warnings->push_back(csm::Warning

                        (csm::Warning::UNKNOWN_WARNING, fullMsg,

                         "UsgsAstroFrameSensorModel::canModelBeConstructedFromState()"));

  }

  }

  return false;

}