#167749958 Return trip endpoint

[hustlaviola]

What does this PR do?

This PR implements return trip endpoint

Description of Tasks

• Update the existing test suite for this endpoint
• Update the validation Schema
• Validate the request body
• Update the controller class with return functionality
• Refactor tests to ensure all cases are passing
• Update Swagger documentation

How should this be manually tested?

• Clone the Repo, change into the directory and run npm install
• Run npm test to see all test cases
• Run npm dev to start the server
• Make a POST request to http://localhost:{PORT}/api/v1/requests on Postman using valid credentials

Sample request body

{
    "origin": "Lagos",
    "destination": "London",
    "type": "return",
    "departureDate": "2020-10-11",
    "returnDate": "2021-10-11",
    "reason": "Moving to a new office location",
    "accommodation": "Buckingham Palace"
}

Background context

• Departure cannot be set to a date before the present
• Return cannot be set to a date before departure

Relevant pivotal tracker story

167749958

Screenshots

[Naimaoye]

Good job victor

[ascii-dev]

LGTM