Initial structure for rendering a blog post stream.

src/command/build/runner.rs

@@ -23,6 +23,7 @@ pub(crate) async fn build_site(args: BuildArgs) -> Result<(), CustomError> {
         stylesheets,
     );
     renderer.render_blog_posts(&config).await?;
+    renderer.render_blog_stream(&config).await?;
     renderer.render_stylesheets().await?;
 
     Ok(())