Hook Car

React Track Challenge - Ignite - @Rocketseat. Consists of finishing an hook for shopping cart.

Actions requested for this challenge

Should be possible add a new product to the cart
Should be possible remove a product from the cart
Should be possible change the quantity of a product in the cart
Should be possible calculating the sub-total and total prices of the cart
Should todo validations on the stock
Should be possible display error messages
Among others.

You can see then all rules are correct running the tests of the application.