add huggingface as model provider

[warengonzaga]

It is nice to have support for using huggingface as the model provider.

Goal:

• Add HuggingFace as an option using flags and then define your model.
• We can utilize the AI inference offered by HuggingFace.
• Use the HuggingFace SDK library.
• Provide a demo when submitting a PR for us to review quickly. (screen recording)

If you have any questions, please let me know.

[warengonzaga]

Please ensure that the #18 has been implemented before proceeding here. Also coordinate to the contributor before adding this PR.