Add the blog app.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4669 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/blog/app.js

@@ -0,0 +1,8 @@
+import * as blog from './blog.js';
+
+async function main() {
+	let blogs = await blog.get_posts();
+	await app.setDocument(blog.render_html(blogs));
+}
+
+main();