Package listings in framework directories

Every official package now has its own repository and an animated install card, and the registries link back to the matching guide page. Live: Django Packages, the Directus Marketplace, the Nuxt Scripts registry. Submitted and waiting on reviewers: Strapi Marketplace, Sanity Exchange, Svelte Society, the Hugo themes site, the Jekyll and Vue community lists, the Docusaurus community resources page. WordPress.org listing tracked separately.