Include @marimo-team/smart-cells to package.json (#140)

Author: manzt

extension/package.json

@@ -272,6 +272,7 @@
     "@effect/vitest": "^0.26.0",
     "@marimo-team/frontend": "link:../../marimo/frontend",
     "@marimo-team/openapi": "link:../../marimo/packages/openapi",
+    "@marimo-team/smart-cells": "link:../../marimo/packages/smart-cells",
     "@std/semver": "jsr:^1.0.6",
     "@tailwindcss/vite": "^4.1.14",
     "@types/mocha": "^10.0.10",