Add multi-language support for Gradio UI

[dreamlessx]

What

Add internationalization (i18n) to the Gradio web demo so the interface can display in multiple languages.

Why

Facial surgery consultation is global. Supporting Spanish, Mandarin, Portuguese, Korean, and other languages makes the tool accessible to a wider clinical audience.

Suggested approach

1. Create a translations/ directory with JSON files per language (e.g., en.json, es.json, zh.json)
2. Add a language dropdown to the Gradio interface
3. Load UI strings from the selected translation file
4. Start with English and one other language; community can add more

Example structure

// translations/en.json
{
  "title": "LandmarkDiff - Surgical Outcome Prediction",
  "upload_prompt": "Upload a frontal face photo",
  "procedure_label": "Select procedure",
  "intensity_label": "Intensity (%)",
  "generate_button": "Generate Prediction",
  "result_label": "Predicted Result"
}

Difficulty: 🟢 Beginner — no ML knowledge needed, good for frontend contributors

[P-r-e-m-i-u-m]

@dreamlessx, I'd like to work on this! I'll create the translations/ directory with en.json and one other language, and add the language dropdown to the Gradio interface."

[P-r-e-m-i-u-m]

and i have see you making this website iam right are wrong
https://huggingface.co/spaces