Display Code Output on the frontend

[ItIsAndrewL]

Send back some dummy output data from the POST /api/submit route. This will just be console output.

Come up with a cool and sleek way to display this console output on the frontend.

From #9 :

• [ ] Click on Output tab and see autograder output for that question against the sample inputs/outputs that are not used for grading
• [ ] Unsubmitted problems should say "No Submission Yet"
• [ ] Most recent output from autograder is shown