Add ToC to blog posts

packages/website/package.json

@@ -21,7 +21,10 @@
     "@sveltejs/vite-plugin-svelte": "^3.1.1",
     "@types/node": "^20.14.2",
     "@types/sharedworker": "^0.0.115",
+    "github-slugger": "^2.0.0",
     "glob": "^10.4.1",
+    "hast-util-to-string": "^3.0.0",
+    "mdast-util-to-string": "^4.0.0",
     "mdsvex": "^0.11.2",
     "rehype-katex-svelte": "1.2",
     "rehype-slug": "^6.0.0",
@@ -44,6 +47,7 @@
     "tslib": "^2.6.3",
     "typescript": "^5.4.5",
     "unified": "^11.0.4",
+    "unist-util-visit": "^5.0.0",
     "vite": "^5.3.1",
     "vite-plugin-dynamic-import": "^1.5.0",
     "vite-plugin-image-optimizer": "^1.1.8"