[docs] Add total_variation_denoising gradio

[gagan3012]

Type of change

• [x] 📚 Documentation Update
• [ ] 🧪 Tests Cases
• [ ] 🐞 Bug fix (non-breaking change which fixes an issue)
• [ ] 🔬 New feature (non-breaking change which adds functionality)
• [ ] 🚨 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] 📝 This change requires a documentation update

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] Did you update CHANGELOG in case of a major change?