feat: add table of contents to posts (WIP)

astro.config.mjs

@@ -3,6 +3,7 @@ import { defineConfig } from 'astro/config';
 import sitemap from '@astrojs/sitemap';
 
 import mdx from '@astrojs/mdx';
+import remarkToc from 'remark-toc';
 
 import cloudflare from '@astrojs/cloudflare';
 
@@ -19,7 +20,10 @@ export default defineConfig({
     shikiConfig: {
       theme: 'nord',
       wrap: true
-    }
+    },
+    remarkPlugins: [
+        [remarkToc, { heading: 'Contents', maxDepth: 3 }]
+    ]
   },
 
   integrations: [sitemap(), mdx()],