Implement store/cart

[weotch]

• Load vuex module from an initialize plugin
• Remove unrelated code from latest project
• Create a new package for the env-specific cookie or add to cloak boilerplate helpers
• Implement lazy hydrating support
• Consider moving getCart out of the store
  • Like interacting with cookies seems kinda out of the scope of vuex. Maybe the plugin stores the id from the cookie in vue on init and then fetch looks it up from there. Then the store doesn't have to import anything ... seems cleaner IMO.
  • If the id doesn't exist in the store already, fetch will create a new cart.