Dev.ap/stts2 hf checkpoints

[roedoejet]

PR Goal?

Loading pretrained models from within the codebase is messy since we need to handle the paths, and the model checkpoints bloat the package/our git history.

Fixes?

An element of #686

Feedback sought?

Does this look reasonable? I think the "local override" option is still not going to be handled well since it will put a potentially absolute path in the config.

Priority?

high

Tests added?

None

How to test?

if you train a model with this branch, you should see the HF models downloading automatically

Confidence?

medium

Version change?

n/a

Related PRs?

EveryVoiceTTS/StyleTTS2#6

Once accepted, we'll need to clean the git history of any *.t7 or *.pth files

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
everyvoice/tests/test_cli.py	68% smaller
everyvoice/cli.py	2% smaller
everyvoice/base_cli/checkpoint.py	0% smaller
everyvoice/base_cli/prediction_writing_callback.py	0% smaller
everyvoice/demo/app.py	0% smaller
everyvoice/model/e2e/StyleTTS2_lightning	0% smaller
everyvoice/model/feature_prediction/FastSpeech2_lightning	0% smaller