v[0.1.024] New Shortcut - Add to Cart

You can add any product to your shopping cart using the T-key (by default).
There are 5 ways to use this shortcut:
* When you hover on a store rack
* When you hover on an empty store rack (but tagged with a product)
* When you hover on a warehouse rack spot.
* When you hover on an empty warehouse rack spot (but tagged with a product).
* When you hover on a box on the ground