refs TryGhost/Team#627
This updates the new Products settings screens to use real data from API for existing Custom Products and Prices to populate them on UI and allow site owners to edit them.
- List all Products of site and allow editing Product name
- List all Prices for a product and allow editing individual Price names
- Add new Prices on a Product
refs https://github.com/TryGhost/Team/issues/627
Wires the real Products data from API to the mock Product settings screen including Product Prices list as well as opening of edit/new price modals. The new Product setting is still behind the developer experiment flag as is under active development, the changes in this commit only allows readonly data but not save/edit upstream.
Co-authored-by: Fabien O'Carroll <fabien@allou.is>
