Submit Revista (#559)

* Create Revista blog and magazine template

Added a new blog and magazine template for Astro.js with various features.

* add md extension

Author: chrisnmorrison

content/theme/revista-astro-blog-template.md

@@ -0,0 +1,34 @@
+---
+title: "Revista"
+github: https://github.com/chrisnmorrison/revista-astro-blog-magazine
+demo: https://revista-gatsby-blog-magazine.pages.dev
+author: Chris Morrison
+date: 2026-01-16
+ssg:
+  - Astro
+cms:
+  - No CMS
+css:
+  - SCSS
+archetype:
+  - Blog
+  - Magazine
+description: A modern blog and magazine template built with Astro v5. Perfect for personal blogs or content sites!
+---
+
+# A modern blog and magazine template for Astro.js
+
+Revista is a lightweight, fast, and fully customizable blog/magazine template built with Astro v5. Perfect for personal blogs, publications, or content creators who want a fast, modern site without the JavaScript overhead.
+
+## Features
+
+* **Zero-JS by default** - Astro components render to HTML, React only for interactive islands
+* **Type-safe content** - TypeScript and Zod schemas for content validation  
+* **MDX support** - Write posts in Markdown with React components
+* **Sanity support** - You may also optionally write articles with Sanity CMS
+* **Automatic categories** - Categories created automatically from your posts
+* **Fully responsive** - Mobile-first design that works on all devices
+* **SEO optimized** - Built-in meta tags, Open Graph, and structured data
+* **Easy customization** - Organized SCSS architecture and CSS variables for theming
+* **Reading time** - Automatic reading time calculation
+* **Featured sections** - Support for trending, top pick, and popular posts