What does this PR do?

Creates a GET order by id endpoint

Description of Task to be completed?

• Add view function to pass requested order_id to the models
• loop through orders list from the database and return parcel that matches the submitted id

How should this be manually tested?

visit the link to the API documentation, https://documenter.getpostman.com/view/4014888/RzZDjd3V.
The GET order by id endpoint returns a response only if the order exists in the database, otherwise it throws an error