[FEATURE]: Pull hyperparameters out of the code

[DrKwint]

Is your feature request related to a problem? Please describe.
We want to tune the hyperparameters from the values we inherited from other settings

Describe the solution you'd like
Remove hyperparameters to be arguments and/or gin configuration so we can tune them

[evan-palmer]

I am starting by pulling the hyperparameters out as I refactor and cleanup the implementation. My plan is to make most of them configurable.

One parameter that I am considering integrating is an epsilon decay function for the __train_step. What do you think @DrKwint ?

[DrKwint]

You can see the changes I've made relevant to this issue on the PR. Sorry I didn't communicate better, I got excited.

[evan-palmer]

No problem! These look similar to the changes that I have made as well, so it won't be hard to merge these