Add "articles" section (with Markdown support if possible)

[brylie]

While researching and developing this app, we are finding interesting information, such as muscle recovery rates or training tips. Let's add an "articles" feature where we can publish these articles as a sub-section of the site. If possible, the articles should be added as Markdown files with automatic routing based on the file name or some frontmatter (similar to Astro.)

[brylie]

https://mdsvex.pngwn.io/docs