chore: migrate cart model (#743)

* chore: migrate cart model

* chore: migrate a few more models and add tests

* chore: update cart model

* chore: switch to key reference for rest in business unit and store for the cart model

* chore: update tests to reflect new mode;

* chore: update tests for cart draft

* chore: rename spec files to builders

* chore: remove unneeded fields from spec and fields-config

* chore: import packages correctly by adding them to package.json

* chore: import packages correctly by adding them to package.json

* chore: migrate cart draft presets

* chore: change the export location of cart draft

* chore: test one file

* chore: regenerate presets again after correcting the generator

* chore: correct the imports and exports of the cart model

* chore: add missing deps after rebase

models/cart/package.json

@@ -20,11 +20,14 @@
     "@babel/runtime": "^7.17.9",
     "@babel/runtime-corejs3": "^7.17.9",
     "@commercetools-test-data/business-unit": "10.12.0",
+    "@commercetools-test-data/cart-discount": "10.12.0",
     "@commercetools-test-data/channel": "10.12.0",
     "@commercetools-test-data/commons": "10.12.0",
     "@commercetools-test-data/core": "10.12.0",
     "@commercetools-test-data/customer": "10.12.0",
+    "@commercetools-test-data/customer-group": "10.12.0",
     "@commercetools-test-data/discount-code": "10.12.0",
+    "@commercetools-test-data/type": "10.12.0",
     "@commercetools-test-data/graphql-types": "10.12.0",
     "@commercetools-test-data/product": "10.12.0",
     "@commercetools-test-data/shipping-method": "10.12.0",