Use AI to fill up new resources

[brumasribera]

• [ ] Change flow to accept resource ONLY as first step, process resource with AI tools:

  • [ ] Extract default description from resource
  • [ ] Extract default subject from resource
  • [ ] Extract default teaching level from resource
  • [ ] Extract default language from resource
  • [ ] Extract default thumbnail from resource 

• [ ] Show forms with data prefilled for editing if required

• [ ] Last step, offer to clean up human

• [ ] Show an alert bell (AlertButton) on the header when autofilled resources are ready to review

• [ ] Show indicator on autofilled resources (VisualResourceAlert) that haven't been reviewed (show them first in the list)

Branch: feature/new-resource-upload-autofill-flow