Add blog app scaffolding with remark plugins

apps/blog/src/content.config.ts

@@ -0,0 +1,13 @@
+import { defineCollection } from 'astro:content';
+import { glob } from 'astro/loaders';
+import { z } from 'astro/zod';
+
+const posts = defineCollection({
+  loader: glob({ pattern: '**/*.md', base: './src/content/posts' }),
+  schema: z.object({
+    title: z.string(),
+    date: z.coerce.date()
+  })
+});
+
+export const collections = { posts };