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/packages/tailwind/tailwind.config.js

@@ -1,5 +1,5 @@
-import path from "path"
-import coreConfig from "./modified.tailwind.config"
+const path = require("path")
+const coreConfig = require("./modified.tailwind.config")
 
 const root = path.join(require.resolve("docs-ui"), "../..")
 const files = path.join(root, "**/*.{js,ts,jsx,tsx,mdx}")