Add Magic Alt Plugin

[Sakib25800]

Description

This PR adds the Magic Alt Plugin

Magic.Alt.Plugin.Demo.mov

• Generates alt text for images using the Cloudflare llaba-1.5-7b-hf (beta) model
• Translates alt text to the selected language using a local translation model

Worker: https://github.com/Sakib25800/magic-alt-plugin-api

Testing

https://magic-alt-plugin.pages.dev

• Generates alt text
  • Opening the plugin should display all images that do not have alt text across the project
  • Clicking generate should generate alt text for all the images (in batches)
  • All input fields should be editable after alt text generation
  • Clicking apply should apply the alt text
• Translates alt text
  • Selecting a different language in the combobox should start loading the translation model (if it has not been loaded already)
  • Clicking translate should translate the alt text to the selected language (in batches)

Adjustments

• The CAPTION_GENERATION_BATCH_SIZE can be increased based on the worker's CPU execution time
• It's been set to 5 since it's the max I could get for the free tier with a 10ms execution time

[vercel]

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[Sakib25800]

transformer.js v3 was recently released so I guess this plugin could be fully local now that a decent model can be run