Attempt time control decoder

[mapmeld]

Trying to streamline in https://github.com/rosewang2008/language_modeling_via_stochastic_processes

Issues

• Closely tied to GPT-2 or BERT base model
• Decoding expects encoder to be a trained (GPT-2?) model
• Encoder can be trained on a HF datasets, but expects one of a set (I am testing with recipes)