docs: add cloud plans & pricing page (#13420)

* docs: add cloud plans & pricing page

* fix buttons

* simplify condition

* remove test frontmatter

* design fixes and changes

* styling fixes

* change node version for tests

* fix build error

* fix tests

* fix github pipeline

www/apps/cloud/package.json

@@ -18,6 +18,7 @@
     "@mdx-js/react": "^3.1.0",
     "@medusajs/icons": "2.10.1",
     "@next/mdx": "15.3.5",
+    "@sanity/client": "^7.11.0",
     "@stefanprobst/rehype-extract-toc": "^3.0.0",
     "clsx": "^2.1.0",
     "docs-ui": "*",
@@ -28,7 +29,8 @@
     "rehype-slug": "^6.0.0",
     "remark-directive": "^3.0.0",
     "remark-frontmatter": "^5.0.0",
-    "remark-rehype-plugins": "*"
+    "remark-rehype-plugins": "*",
+    "slugify": "^1.6.6"
   },
   "devDependencies": {
     "@types/mdx": "^2.0.13",