feat(whisper-api): with endpoint

[luoling8192]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @luoling8192, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors the Hugging Face API client initialization within the whisper-api application. It introduces a dedicated module to centralize the API client creation, enabling configuration of the Hugging Face endpoint and cache directory through environment variables. This change improves the application's configurability and maintainability by standardizing how external Hugging Face resources are accessed.

Highlights

• Centralized Hugging Face API Configuration: Introduced a new module huggingface.rs to encapsulate the logic for creating and configuring the Hugging Face API client. This centralizes the setup for hf_hub::api::sync::Api instances.
• Environment Variable Support for HF Endpoint and Cache: The new create_hf_api function allows specifying a custom Hugging Face API endpoint via the HF_MIRROR environment variable and a custom cache directory via the HF_HOME environment variable, enhancing deployment flexibility.
• Integration with Existing Components: Updated the VADProcessor and WhisperProcessor initialization logic to utilize the new huggingface::create_hf_api() function, ensuring all model loading benefits from the centralized and configurable API client.

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[gemini-code-assist]

Code Review

This pull request introduces a factory function, create_hf_api, to centralize the creation of the Hugging Face API client, allowing for configuration via environment variables. The review includes suggestions to make the handling of these environment variables more robust by checking for empty strings, which will prevent potential runtime errors.

[nekomeowww]

If so, support all HF API.

[luoling8192]

The HF SDK only supports endpoint, cache_dir, and token.

The retries and user-agent, which are unnecessary for the user to set by user.

[nekomeowww]

Follow Gemini.