52/collab room creation

[df-Nic]

What was done

1. When 2 users has confirmed their match, the matching service will send a match confirm event in which one of the collaboration services will pick up and create a room consisting of the details for the match
2. Collaboration service will directly send a request to the question service to fetch 1 question based on the match's difficulty and category
3. Created a WebSocket manager to manage the WebSocket between the service and the API gateway

Closes #52

[df-Nic]

Since the collaboration service will establish the WebSocket connection the endpoint is not needed

[sheenkerr]

LGTM