Add status field to Order model (and remove available quantity from Food)

[Ramin-RX7]

Part 1

In the orders app, create a new field called status.

This field must use models.TextChoices

the available options in status field:

• pending
• approved
• delivered
• paid

the default must be pending

add these methods:

• approve: set the status to approved
• pay: set the status to paid (don't forget to save the object after these changes)

This status field has to be seen in the orders view template

Part 2

Remove the available quantity from the Food model.

Search through the project and remove anything related to this field (example: templates, model methods, views, ...)