message: Refactor autofl.net.__main__ to use Abseil
diff: +from absl import app, logging
  +
  from .orig_2nn import orig_2nn_compiled
  from .orig_cnn import orig_cnn_compiled
  from .resnet import resnet20v2_compiled
  -print("\nOrig. 2NN:")
  +
  +def main(_):
  + logging.info("\nOrig. 2NN:")
  model = orig_2nn_compiled()
  -model.summary()
  + model.summary(print_fn=logging.info)
  -print("\nOrig. CNN (MNIST):")
  + logging.info("\nOrig. CNN (MNIST):")
  model = orig_cnn_compiled()
  -model.summary()
  + model.summary(print_fn=logging.info)
  -print("\nOrig. CNN (CIFAR-10):")
  + logging.info("\nOrig. CNN (CIFAR-10):")
  model = orig_cnn_compiled(input_shape=(32, 32, 3))
  -model.summary()
  + model.summary(print_fn=logging.info)
  -print("\nResNet20v2 (CIFAR-10):")
  + logging.info("\nResNet20v2 (CIFAR-10):")
  model = resnet20v2_compiled(input_shape=(32, 32, 3))
  -model.summary()
  + model.summary(print_fn=logging.info)
  +
  +
  +if __name__ == "__main__":
  + app.run(main=main)
  