[FRONTEND] Add checkin/checkout times to booking confirmation page

[bcho892]

Is your feature request related to a problem? Please describe.

Change uasc-next\src\components\composite\SuccessfulBooking\SuccessfulBooking.tsx and make use of the constants in uasc-next\src\utils\Constants.ts for the times.

it should be similar to

BEFORE MERGING

• [ ] Storybooks created where possible
• [ ] Tested with nock if data fetching
• [ ] Tests written for critical interactions
• [ ] PR Reviewed (For non-trivial changes)
• [ ] Changes tested after rebasing on master or merging in master (hint: git fetch origin master:master, then git rebase master or git merge master)
• [ ] All required PR checks passing

[bcho892]

Closed in favour of a back end solution