Validated createTrack endpoint

[fortune710]

Validated the createTrack endpoint to give appropriate error responses
​

Description

In the createTrack endpoint, I added a handler to check if there was a request body, if there wasn't it would send a bad request error,
Also validated the user_id and track_id being sent through the request body,
user_id must be a valid uuid, track_id must be a valid integer

​

Motivation and Context

To Prevent invalid data from getting into the Database

​

How Has This Been Tested?

Tested in Postman
​

Screenshots (if appropriate - Postman, etc):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
  ​

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Valid Data to Test the Endpoint

{
  "user_id": "f284a2b9-ec26-42b2-895f-8e87382b0cda",
  "track_id": 4
}

Invalid Data to Test the Endpoint

{
  "user_id": "f284a2b9-ec26-42b2-895f-8e87382b0cda",
  "track_id": "4"
}