Adding files for HF hub repo

[madhavatreplit]

Why

We want to push up our model to Huggingface Hub following Mosaic's example of publishing RedPajama on the Hub .

We use this repo's main branch to track the files that are uploaded to the hub.

• The Huggingface Hub repo is tracked on the remote origin.
• This Github repo is tracked on the remote github.

Both remotes are pushed to from main.

Note that the exact model binary pytorch_model.bin is not tracked here since Github does not allow uploading files > 5GB even for orgs.

What changed

• Added base files with our model classes, tokenizer and configs similar to how Mosaic published RedPajama.
• Added README.md with instructions on how to use the model.

Testing

Can run generations as expected by following the steps in the README.

Rollout

• [x] This is fully backward and forward compatible