[FEATURE]: Add GET functionality for /orders endpoint

[itsdeannat]

User story

As a developer,
I want to check on the status of an order
So I can display the order status on my e-commerce website

Scenario

Given: an authenticated user wants to make an API call
And: their access token is valid
When: a user submits a GET request to /orders/{id} with their access token
Then: the server responds with the status of their order, date ordered, price, and products

Feature completion checklist

• Build feature
• Make test calls to {endpoint}
• Build supporting documentation for {feature}