update with more cifar10 experiments

cifar_example/__init__.py

cifar_example/cifar10_lightning_ver_2.py

cifar_example/cifar_example_transformer.py

cifar_example/cifar_transformer_modules/__init__.py

cifar_example/cifar_transformer_modules/embedding.py

...example/cifar_transformer_modules/multi_head_attention.py

...example/cifar_transformer_modules/my_transformer_layer.py

cifar_example/self_attention.ipynb

cifar_example/vis.ipynb

pth_lighting_example/mnist.ipynb