User Story: Order Line Item Model

[DarrachBarneveld]

As a developer, I can view and manage line items within orders to track my purchase accurately and efficiently.

Acceptance Criteria:

1. Admin can see line items within orders
2. The line item contains the quantity, price and discounts of the order
3. The line items linked directly to an order

Tasks

• [x] Create an order line item
• [x] Orderline items calculate the total of the quantity of items
• [x] Order line items shows price of individual items
• [x] Order Line items can be of any item

[DarrachBarneveld]

OrderLine item model created and linked to orders. This users a generic content type as referenced in the django frameworks documentation https://docs.djangoproject.com/en/5.0/ref/contrib/contenttypes/