In this exercise we explore a common scenario in eCommerce, adding and removing items from the cart, and calculating the total. You final solution should look like this:

• Implement a dynamic front-end app that uses shared state

• Use the index.html file as a starting point.
• index.js contains the initial state - a list of items available to purchase and an empty cart
• Images for each item are in the assets folder
• The HTML required for the items in the list and the cart items are provided in the templates folder
• Implement the following requirements
  • A user can view a selection of items in the store
  • From the store, a user can add an item to their cart
    • If the item is already in the cart, increase the item's quantity in the cart
  • From the cart, a user can view and adjust the number of items in their cart
    • If an item's quantity equals zero it is removed from the cart
  • A user can view the current total in their cart

• Add filters to the store ie. filter by item type; when a user clicks a filter they will only see items of that type

• Add sorting to the store ie. sort by price or sort alphabetically; when a user clicks sort they will see a sorted list of items