[xh]Enable hugging face client to use code generation specific model

[matrixstone]

Description

When use description to generate block code, one step may run into is to generated customized code based on description.
In existing hugging face client, it uses default language model to generate the customized code. However, there are code generation specific model which can perform better than general language model for that task.

This PR enables this capability by using a code generation model for that specific task.

• It adds config to enable this feature and provides a code_gen_api
• In the inference function, it adds the inference type and for code generation type, it calls a specific function to call the code_gen_api to fulfill the task

How Has This Been Tested?

Tested with local command and Mage UI

Checklist

• The PR is tagged with proper labels (bug, enhancement, feature, documentation)
• I have performed a self-review of my own code
• I have added unit tests that prove my fix is effective or that my feature works
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• If new documentation has been added, relative paths have been added to the appropriate section of docs/mint.json

cc:
@dy46