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/modified.tailwind.config.js

@@ -1,5 +1,5 @@
 // This config file includes the base configurations with the modified configs for UI docs
-import coreConfig from "./base.tailwind.config"
+const coreConfig = require("./base.tailwind.config")
 
 // modify core spacing to have "docs" prefix
 const modifiedSpacing = {}