1.Refactor of examples,
1)move examples/train.py to Parakeet/utils/_train.py
2)move examples/synthesize.py to Parakeet/utils/_syn.py
3)move examples/_updater.py to parakeet/training/_updater.py
4)move examples/batch_fn.py to parakeet/datasets am_batch_fn.py and vocoder_batch_fn.py
update speedyspeech preprocess(use MFA)and frontend (same with fastspecch2)
1.Refactor of examples, 1)move examples/train.py to Parakeet/utils/_train.py 2)move examples/synthesize.py to Parakeet/utils/_syn.py 3)move examples/_updater.py to parakeet/training/_updater.py 4)move examples/batch_fn.py to parakeet/datasets am_batch_fn.py and vocoder_batch_fn.py