Implemented the tuning parameters into the CLI

[Turbine1991]

I was surprised that these weren't supported, as I wasn't planning on using Python.

This patch does the following:

• Supplies the parameters and help, with the correct datatype.
  num_autoregressive_samples
  temperature
  length_penalty
  repetition_penalty
  top_p
  max_mel_tokens
  diffusion_iterations
  cond_free
  cond_free_k
  diffusion_temperature
• These new unspecified parameters will be omitted from changing the updated values.
• Documentation has been updated to reference help to view parameters.

I think tortoise-tts needs a bit of TLC.

[manmay-nakhashi]

@Turbine1991 please upadate default values to the cli from the code , don't pass None as default