Update huggingface-cli to hf

[cadnza]

Overview

This PR updates the Hugging Face plugin to refer to the new hf instead of the legacy huggingface-cli (see Say hello to hf: a faster, friendlier Hugging Face CLI ✨).

Type of change

• Created a new plugin
• Improved an existing plugin
• Fixed a bug in an existing plugin
• Improved contributor utilities or experience

How To Test

make huggingface/build
op plugin init hf

Changelog

The Hugging Face plugin now correctly uses the new hf command instead of the old huggingface-cli command.