Add cards to inventory
- cards can now be added from explorer to the inventory
- the functionality to remove the card from the inventory is in another ticket
- the ButtonAddToInventory has a temporary hardcoded variable testCourse that are only here atm for testing. This should be changed to course when the course data includes blocks When testing: change the blocks value in the testCourse variable in the ButtonAddToInventory component to the following values (in any order you want): 1-2 1-3 2-3 3-4 1-4