FIXES CMRC-722
**What**
- It should not be allowed to delete a default sales channel
- The admin does not allow to delete a sales channel use as the default for the store
**What**
- validate that variants are unique with respect to options on product update/create and variant update/create
- validate that the product has options upon creation
- ensure variants have the same number of option values as the product has options
- admin error handling
- update tests
---
FIXES FRMW-2707 CC-556
* chore: Move publishable api key tests to HTTP
* chore: Move store tests to HTTP folder
* fix: Add tests for store products, fix several bugs around publishable keys
What
- Move sales channel integration tests from `/api` to `/http`
Deleted tests that do not belong in the suite:
- POST /admin/products/:id
- Mutation sales channels on products
- POST /admin/products
- Creating a product with a sales channel
- GET /admin/products
- Filtering products by sales channel
- Expanding with a sales channel
- GET /admin/orders
- Filtering orders by sales channel
- Expanding with a sales channel
- POST /admin/orders/:id/swaps
- Creating a swap with a sales channel
