i18n for frontend

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Configure Gradio i18n via yaml file.
Docs: https://www.gradio.app/guides/internationalization

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Encountered a problems during implementation:

• Gradio i18n is not working for CheckboxGroup and the Column Titles of examples.
• There is not i18n for description and article attributes in gradio.Interface

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Related existing issue for examples: gradio-app/gradio#11351
New issue for CheckboxGroup choices: gradio-app/gradio#11611