Report error when huggingface-cli is not available

[rhatdan]

Fixes: #688

Summary by Sourcery

Bug Fixes:

• Report an error when huggingface-cli is unavailable when pushing or logging out.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request modifies the huggingface module to raise an exception when the huggingface-cli is not available, instead of skipping the operation or printing a message.

Sequence diagram for HuggingFace CLI operations with error handling

sequenceDiagram
    participant User
    participant HuggingFace

    alt huggingface-cli available
        User->>HuggingFace: login()/logout()/push()
        HuggingFace->>HuggingFace: Execute CLI command
        HuggingFace-->>User: Success
    else huggingface-cli not available
        User->>HuggingFace: login()/logout()/push()
        HuggingFace-->>User: Raise NotImplementedError
        Note over User,HuggingFace: Error: huggingface-cli not available
    end

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File-Level Changes

Change	Details	Files
Raise an exception when huggingface-cli is not available.	Replaced NotImplementedError message with a variable missing_huggingface. Removed print statement and return when hf_cli_available is false in push method. Raise NotImplementedError with missing_huggingface when hf_cli_available is false in push method.	ramalama/huggingface.py

Possibly linked issues

• ramalama should detect if it is missing dependencies like huggingface_hub #688: The PR fixes the issue by raising a more informative error message when huggingface-cli is not available, addressing the TypeError raised during login.

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[sourcery-ai]

Hey @rhatdan - I've reviewed your changes - here's some feedback:

Overall Comments:

• The missing_huggingface variable appears to be undefined. This needs to be defined before this change can work correctly.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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